C,UI'ft!Dt A.Wareaess, ¥UJlletin

Volume I-No.2Fall 1985

Published by the Manufacturing Technology Information Analysis Center IMTIAC)lOWest 35th Street, Chicago, Illinois 60616

CONTENTSPage

End-of-Contract Demonstration (POOl) 2MTIAC Status Report 2MTIAC Studies 3USA MICOM Makes Man Tech Videos. . . . . .. 4Squeeze Casting with Composites 4

Page

Grculation of Final Reports 5A Testbed for Automated Manufacturing 6End-of-Contract Demonstrations 6Meeting Calendar 7

MTAG-1985

The seventeenth annual DoD Tri-Service Manufac­turing Technology Conference (MTAG' 85) was heldon November 4-8 in Washington, D.C. The theme ofthis year's conference was "Manufacturing Technol­ogy - A Management Commitment to Improve Pro­duction Base Productivity, Readiness and Respon­siveness." This year's meeting was sponsored by theAir Force and the keynote speaker was Caspar W.Weinberger, Secretary of Defense.

Each year senior management of defense contractorsand technical specialists find the programs to be tech­nically informative qn manufacturing technologyprograms and recent developments.

The programs in the general sessions cover the com­mitments, impediments and constraints which in­fluence industrial planning for the development andimplementation of advanced manufacturing tech­nologies.

If you have an interest in next year's MTAG, watchfor the announcement in this bulletin or call MTIACearly next fall. Proceedings of the 1985 conferenceare available to qualified recipients. Contact MTAG'85, c/o Universal Technology Corporation, 1616Mardon Drive, Dayton, OH 45432 (513-426-8530)for details.

A Department of Defense Information Analysis Center

MTIAC is a full-service information analysis cen ter managed by Cresap, McCormick and Paget Division of TPF&C, Inc.,a firm which provides technical services to government and industry. The principal sub-contractor is the lIT ResearchInstitute, one of the largest not-for-profit research organizations in the United States .

• Technical advice and assistance • Technology assessments and state of the art reports

• Summaries of important developmentsin manufacturing technology

• Access to domestic and foreign literature,government and commercial data bases

For additional informationtelephone 312-567-4730

Cresap, McCormick and Paget Division of TPF&C, Inc. and lIT Research Institute10 West 35th Street, Chicago, Illinois 60616

The MTIAC Current Awareness Bulletin is published at regular intervals and distributed free-of-charge by MTIAC. Forfurther infonnation on the services and publications of the Center, contact Thomas B. Turner; Director or R. L. Diesslin,Technology Coordinator. A pamphlet on the mission, sc pe and functions of the Center is available on request. MTIAChas been established under Contract DLA900-84-C-1508.

The Center concerns itself with areas of manufacturing technology that are app 'cable to defense systems. These areasinclude but are not limited to: Metals, Nonmetals, Electronics, CAD/CAM, Inspection and Test, and Munitions. In thecontext of the contract, the tenn "manufacturing" covers the entire life-cycle of a product-i.e., design, production andoperational support.

Each of the above six subject areas includes but is not limited to the defense-related fields of: machine tools andmanufacturing equipment, robots and special machines, material handling equipment, controls, software and data­bases, communication lines and networks, sensors and inspection or checkout procedures, signal processing, materialsand materials treatments, production processes, the specific defense products being produced and managementaspects of manufacturing technology.

End-Of-Contract DemonstrationProduct Definition Data Interface (PDDI)John Lamoureux, lIT Research Institute

On September 30 - October 1, 1985 in St. Louis,presentations and demonstrations were given onthe Product Definition Data Interface (POOl) projectsponsored by the Air Force. The POOl project wasawarded to McDonnell Aircraft Company in 1982,and addressed the manufacturing requirements fora digital product definition. Digital product defini­tion will replace the function of blueprints in man­ufacturing, and is a crucial step toward the realiza­tion of the truly paperless factory. Currently, Com­puter Aided Design/Drafting (CAD) systems storeinformation in a manner appropriate to drawing thepart (i.e., as lines, circles, and arcs). The objective ofthe POOl project, on the other hand, was to identifyrequirements for a computer model which stores theinformation necessary to manufacture the part.

The POOl project has resulted in a method wherebya part is viewed as a collection of features such asholes, slots, fillets, webs, and so on. Also, variousapplications such as engineering analysis, drafting,process planning, NC programming, and inspec­tion all access the same part model. A single partmodel to support all manufacturing and engineer­ing applications eliminates the creation and main­tenance of multiple data bases. The PDDl projecthas also defined a neutral exchange format so thatdissimilar CAD and CAM systems can share thesame data. The functions that were demonstratedincluded, but were not limited to, NC machining,process planning, and inspection.

The POOl effort is expected to form the basis for adigital product data exchange standard for the AirForce. The Air Force recently awarded the Geo-

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metric Modelling Applications Program (GMAP) toPratt & Whitney Aircraft in East Hartford, CT. Thiseffort will extend the POOl concept to complexturned parts and other support areas of manufac­turing. POOl is also expected to heavily influencean effort currently underway in the IGES commun­ity called the Product Data Exchange Standard(PDES). PDES will be the United States' entry intothe international standards community effort to de­fine a complete digital product definition exchangestandard.

Project reports are available to qualified recipientsfrom: AFWALlMLTL, ICAM CM Library, Wright­Patterson Air Force Base Dayton, OH 45433-6533,(513-255-7371).

MTIAC STATUS REPORT

ist of UsersMTIAC has been in operation since June 1984. TheCenter has been organizing, Center personnel havebeen entertaining user inquiries, and tasks havebeen undertaken for government agencies. Usersinclude Picatinny Arsenal, the Naval Avionics Cen­ter, Allied-Bendix, LTV Aerospace and Defense,Lockheed California, Hughes Aircraft, GoodyearAerospace, the Naval Ordnance Station at IndianHead, Boeing Electr nics, General Dynamics andCAM-I (through D. Appleton Inc), to mention afew. You do not have to have a deposit account touse the Center's services.

The Importance of Search Services

As manufacturing becomes more and more scien­tific, in that it depends increasingly on an estab­lished body of knowledge, it is essential to learn

how to tap that body of knowledge. One way toaccelerate solutions is to continually seek and accessthe data and information available through the De­fense Technical Information Center and its asso­ciate Information Analysis Centers.

If your firm participates in DROLS, the DefenseResearch On-line System, you are accessing theinformation made available by government agenciesand Centers such as MTIAC. MTIAC contributionsof citations and abstracts deemed suitable for DTICwill be available on-line.

Subscription Services

Many of our readers have requested informationabout fees and services available from the Center.Each requester will receive a copy of the Centerbr chure. This booklet contains an order form forsubscribing to MTIAC services with a depositaccount.

Subscribers to Center services will receive the fol­lowing:

User's Guide for Bibliographic Search

The Center's approach to bibli graphic search strat­egy in the field of manufacturing technology hasbeen thoroughly set forth in a working documentnamed the Bibliographic Search User's Guide.

One important element in this document is a The­saurus of Manufacturing Technology terms, devel­oped by the Center. Development of this thesaurusis critical to the process of collection nd classifica­tion of data in the manufacturing technology field.

User's Guide for the Manufacturing TechnologyProjects Data Base

The Center has developed an on-line data base forthe collection and dissemination of data on Man­Tech projects conducted by the Army, Navy and AirForce. The system has been put in service usingArmy and Navy data. Data from the Air Force areexpected in the near future. A User's Guide for theMTP Data Base System is available to Center sub­scribers. Subscribers can access the data base fromtheir own terminals.

MTIAC Studies

MTIAC management requested the convening De­partment of Defense, Army, Navy, and Air Force

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representatives to consider the proper direction fortechnical studies to be conducted by Center techni­cal experts. Four subjects were selected for study.The Technology Assessments on "Artificial Intelli­gence Applications in Manufacturing" and "FiniteCapacity Scheduling and Simulation Systems" arecurrently available and are reviewed below. TheT/A's on "Higher Order Languages for Robots" and"Automated Inspection in Flexible ManufacturingSystems" will be available in the next few monthsand will be abstracted in the next MTlAC CurrentAwareness Bulletin.

All of these Technology Assessments will be avail­able to MTIAC subscribers and other qualified re­cipients. The current price is $20 for hardcopy (Note:DROLS users will find these reports available onmicrofiche from OTIC). These reports are unclas­sified. Contact Lori Riordan at (312) 567-4731 formore information on how to order.

MTIAC-TA-85-0lArtificial Intelligence Applications

in Manufacturing

By James H. Cook, Ph.D.; IITRI

Developments in the field of artificial intelligence(AI) hold great promise for applications in the fac­tory of the future. However, the technology andapplications are still in an early stage ofemergence.The literature of the last few years has been sur­veyed to develop a profile of the state of this emer­gence. This coupled with interviews with expertsheavily involved in the application of AI shows thatwithin the AI family of technologies, expert systemsdominate current applications. The next year prom­ises to be very active as true production expert sys­tems begin to appear. This won't be without prob­lems, however.

This technology assessment provides several refer­ences for initial reading in AI, and contains lists ofproducts, programs and players in the field.

MTIAC-TA-85-04Finite Capacity

Scheduling and Simulation

By Ray Levulis; Cresap, McCormick & Paget

U. S. Manufacturing is facing global competition andnot always winning. The potential erosion of the

manufacturing base can have serious implications tothe defense community. Manufacturing is a verycomplex activity and simulation has often been at­tempted to understand the various interactions.The state of the art in manufacturing simulationand systems is still evolving.

Material Requirements Planning (MRP) has provento be a significant step in achieving some degree offormality and control in manufacturing. However,it has not provided the total answer to the needs ofmanufacturing, particularly on the shop floor. Thus,some U.S. producers have turned to Japanese con­cepts such as Just-In-Time OIT) and the associatedscheduling techniques, referred to as Kanban.

There is, however, a relatively new approach termed"bottleneck optimization" which focuses on gainingcontrol of the constrained resources. A number ofsystems based on this approach are emerging.

Bottleneck optimization primarily focuses on finitecapaci ty planning or simply, scheduling actual workcontent against specific machines and work stations.In contract, MRP focuses on materials planning andassumes an infinite shop capacity. Therefore, spe­cific processing capabilities are generalized, at best.

Finite capacity scheduling appears to have the po­tential of offering U. S. industries significant benefitin reducing lead times and may be of benefit to somemanufacturers in the defense industries.

USA MICOM Makes Man TechVideos AvailableAs the Center has proceeded with its task of collect­ing data, each staff member has become sensitive tothe efforts of the various commands and the mannerin which they make their products available to othercommands and Centers.

The U. S. Army Missile Command Redstone Arse­nal, Alabama has been most helpful in providinginformation to MTIAC. Document Ref: 32:MMT.001is available to authorized users without charge. It.describes the status of MICOM MM&T projects,provides a list of MM&T Project Videotapes and willprovide invitations to end-of-contract demonstra­tions.

If you wish further information, please contact:

Commander, U.S. Army Missile Command,Attn: AMSMI-ET/T.D. Parker,Redstone Arsenal, AL 35898-5270or phone 205/876-2147 (AV 746-2147).

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Squeeze Casting with Composites:Techniques Which Improve

Metal PropertiesBy J. Dorcie, lIT Research Institute

Squeeze casting is a foundry process in which aliquid metal charge is forged to shape inside closeddies between the platens of a hydraulic press. Inrecent years, squeeze casting has found productionapplications in the U.S.A. 1 in the United Kingdom 2

and in Japan 3,4, for such aluminum alloy compo­nents as car wheels and heavy-duty diesel enginepistons.

Squeeze casting is simple and economical, efficientin its use of raw material, and has excellent potentialfor automated operation at high rates of production.Due to the high level of applied pressure, porosity iseliminated and microstructural refinement is achievedto a much greater extent than in any other castingprocess. As a result, squeeze casting has been shownto generate the highest mechanical properties at­tainable in a cast product. 1-4

The microstructural refinement and integrity madepossible by squeeze casting promQtes a variety ofsecondary operations to be conducted with the sameease as with a wrought product. These operationsinclude welding and solution heat treatment.

An emerging attribute of squeeze casting is the easewith which dissimilar (metal or ceramic) inserts canbe incorporated into the casting. Forging processeshave very limited capabilities in this regard. Mostcasting processes can accommodate solid inserts tosome extent. But in the case of fibrous mats thatrequire infiltration of molten metal into small pores,squeeze casting stands alone. Work at Toyota 5 andby the lIT Research Institute indicates that the highapplied pressure in squeeze casting enhances metal­to-ceramic con tact in the production of metal-matrixcomposites.

Early Composite Experiments

The first attempts at reinforcing aluminum squeezecastings were made in 1978 by adding up to 30volume percent of silicon carbide or carbon whiskersto 1100 aluminum. At the higher volume fractions,fluidity of the melt was impaired and die fillingcould be made more difficult. This could be com-

pensated for by increased metal temperatures andhigher applied pressures, but it was decided thatreinforcement of the castings required the use oflarger fibers or particulates.

Experiments were then conducted using a foamedceramic as reinforcement in A206 aluminum alloy.The foamed ceramic contained 8% solid ceramic.This material is often used as a filter for moltenmetals and thus could be easily penetrated bymolten metal. The foamed ceramic was placed in thedie, and the molten aluminum was poured into thedie cavity. When the punch was closed, the pres­sure forced the aluminum into the pores in theceramic. No collapse of the ceramic preform occursduring processing.

Similar experiments were also carried out using pre­forms of Saffil alumina fibers. Saffil is a registeredtrademark of Imperial Chemical Industries, Ltd.,contains 95% alumina and 5% silica, and has amelting point of 3500°F. The fiber tensile strength is150 xl03 psi and the tensile modulus is 15 x 106

. TheSaffil was presen t in preforms of 3-1/2 in. diameterx 5/8 in. thickness, having two densities, 11 and18%. The preform was squeeze cast into an A206aluminum squeeze casting.

The composite reveals complete penetration of thealuminum alloy within the fiber network at boththe high and low density Saffil.

At higher magnification, the structure shows a com­plete continuity of aluminum in the fiber spaceswith both the high and low density Saffil reinforce­ment (Figure 1). All of the fibers, even the micron

Figure 1

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size pieces, are fully encased in aluminum. No mi­crovoids or gas pockets are present, and the compo­site is monolithic. Preliminary results indicate thatthe high density Saffil structure has outstandingwear resistance approaching that of ferrous materials.

References

1. S. Rajagopal, "Squeeze Casting: A Review andUpdate," Journal of Applied Metalworking, Vol.1, No.4 pp. 3-14 (1981).

2. G. Williams and K. M. Fisher, "Squeeze Formingof Aluminum Alloy Components," Metals Tech­nology, pp. 263-267 Guly 1981).

3. S. Okada, N. Fujii, A. Goto, S. Morimoto, andT. Yasuda, "Development of a Full AutomaticSqueeze Casting Machine," AFS Transactions,Paper No. 82-16, pp. 135-146 (1982).

4. Y. Kaneko, H. Murakami, K. Kuroda, andS. Nakazaki, "Squeeze Casting of Aluminum,"Die Casting Engineer, pp. 26-38 (May-June 1979).

5. T. Donomoto, K. Funatani, N. Miura, andN. Miyake, "Ceramic Fiber Reinforced Piston forHigh Performance Engines," presented at theSociety of Automotive Engineers InternationalCongress & Exposition, Detroit, SAE Paper No.830252 (1983).

Circulation of Final Reports

If you are the manager of a Manufacturing Technol­ogy project, or are responsible for the conduct of aproject which has importance to the manufacturingtechnology community, please send a copy of thefinal report to MTlAC at the same time a copy is sentto your Scientific and Technical Officer.

The AMRF: A Testbedfor Automated Manufacturing

The adoption of computer integrated manufactur­ing (CIM) is being driven by pressing national needsfor increased quality, greater flexibility, cost reduc­tion and shorter production time.

This new technology, made possible by the devel­opment of cheap and powerful microprocessors,promises revolutionary changes in the productionof manufactured goods. However, the full potentialof CIM can be realized only as industry adopts stan­dards and agrees on interfaces between the complexoperating units of the automated factory. To be use­ful, these standards must be built on a sound under­standing of the technology and a generally accepteddesign model for computer automation.

The Automated Manufacturing Research Facility(AMRF) at the National Bureau of Standards (NBS)is a research testbed for these automation standardsand interfaces. It supports the technical work neces­sary to develop the standards and provides a com­mon ground where industry, university, and gov­ernment can work cooperatively on problems ofautomated manufacturing.

The AMRF consists of five machining or measure­ment workstations, each built around a major ma­chine tool and its tending robot or robots; a materialhandling system; a network; a data administrationsystem; a cell control level; and higher levels ofcontrol. The basic machinery is largely off-the-shelf.Although the facility will not be fully operationaluntil 1896, its developing technology is already hav­ing an impact.

End of Contract DemonstrationsOne of the important steps in a ManufacturingTechnology Project is the End of Contract Dem­onstration. On this occasion, the contractor oragency which has developed and/or applied thetechnology puts on a demonstration of the equip­ment and processes involved. Invitations are issuedto those agencies and contractors who may benefit

from the development and apply it to the manufac­ture of defense materiel in their own facilities.

The following calendar of events has been confirmedby the staff at MTIAC. It is also available on-line toMTIAC users through the MTIAC ManufacturingTechnology Projects Data Base (MTPDB). The database will be updated at intervals.

DATE PROJECT NO. PROJECT TITLE CATEGORY LOCATION

DEC 85 NAVY (AIR) AOO15 Data Annotation Write Heads Electronics OptotekOttawa, Canada

DEC 85 NAVY (AIR) A0411 Through Porous Nonmetallic Nonmetals Sin~erKerfootBearing Retainer Utt e Falls, NJ

DEC 85 NAVY (AIR) AI447 Turbine Engine Bearing TestlInspection Naval Air ReworkDiagnostics and Refurbishment Facility-North Isl

San Diego, CA

DEC 85 NAVY (SEA) S0770 Automated Finishing of CAD/CAM Robotic Vision SystemsShip Propellors Melville, NY

DEC 85 NAVY (SEA) S1107 Localized 3D Vision for Welding CAD/CAM Robotic Vision SystemsHauppauge, NY

DEC 85 NAVY (SEA) S1109 Robotic Adaptive Welding Metals Westinghouse R&D OrSystem (RAWS) Pittsburgh, PA

DEC 85 NAVY SPAWAR) Xm08 Grid Wire Coating Process for Electronics EIMACNarianPower Grid Tubes San Carlos,CA

DEC 85 ARMY 682 8341 Hollow Cyclinder Cut-Off Watervliet ArsenalMachine Watervliet, NY

DEC 85 ARMY 683 8154 Computer Integrated Watervliet ArsenalManufacturing for Cannon Watervliet, NY

Points of Contact:

ARMY - BILL GARBERPhone: 518-266-5319Autovon: 974-5319

NAVY- W. L. CHRISTENSENPhone: 215-897-6684Autovon: 443-6684

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The AMRF model is already serving as a basis forplanning prototype manufacturing systems forNaval Shipyards, Naval Air Rework Facilities, andindustrial manufacturers. One Navy manufacturingcontractor - FMC, Northern Ordnance Division­

alreadying is applying AMRF technology in devel­oping its own unattended machining workstation.FMC facilitated the transfers of NBS concepts to thed sign of the workstation through a Research As­sociate agreement between NBS and FMC.

The NBS Research Associate Program allows pri­vate firms and organizations to sponsor work bytheir own researchers at NBS labs on problems of

mutual interest. Active programs of research such

as these are being conducted at all AMRF worksta­

tions by NBS personnel, research associates from

private industry and the Navy, and guest workers

from universities. Since 1982, 33 research associatesand an equal number of guest workers have workedin the AMRF. In addition, 17 universities are af­filiated with the AMRF and 10 industrial firms havedonated or loaned over $3.5 million of equipmentfor incorporation into the facility.

A recent study of the payback of AMRF work con­

cludE.d that the program will save the Department ofDefense over $154.8 million by 1989 from the in­creased use of NC machine tools alone. When theanalysis is broadened to indude all 000 savings, anannual return of over $300 to $500 million is ex­pected by 1990.

The AMRF point of contact at is Dr. Dennis Swyt,

Deputy Director (301) 921-3421. The point of contact

at the U. S. Navy, which co-sponsors the project, isMr. J. McInnis, (202) 692-0121, AV 222-0121

Meeting Calendar

DECEMBER 1985

SCAN-TECH '85AIMI, Dec. 2-5, Baltimore, MDContact: 412/963-1165

DEVELOPING A PRODUOIVE AUTOMATEDASSEMBLY SYSTEM: WORKSHOPSME, Dec. 3-4, Phoenix, AZContact: 313/271-0039

DEVELOPING ROBOT WORKCELLS: WORKSHOPRI/SME AND SME, Dec. 10-12, Atlanta, GAContact: 313/271-0039

JANUARY 1986

COMPOSITES IN MANUFACTURING 5:EXPOSmON AND CONFERENCESME AND CG/SME, Jan. 14-16, Los Angeles, CAContact: 1-800/535-8005; in Michigan: 1-800/533-9303

5TH TOQL AND MANUFACTURING ENGINEERINGCONFERENCE AND EXPOSmONSME, Jan. 28-30, Charlotte, SCContact: 313/271-0777

FEBRUARY 1986

NATIONAL METAL FORMING AND FABRICATINGTECHNOLOGY FAIRFMA, Feb. 11-13, Atlanta, GAContact: 815/654-1902

MANUFACTURING PRODUCTIVITY CONFERENCEAND EXP05mON5MB, Feb. 11-13, Orlando, FLContact: 313/271-0777

11TH TOOL AND MANUFACTURING ENGINEERINGCONFERENCE AND EXPOSmON (HOUSTEX '86)SME AND NTMA, Feb. 18-20, Houston, TXContact: 5ME 313/271-0777, NTMA 713/928-6241

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MARCH 1986

DEVELOPING A PRODUCTIVE AUTOMATEDASSEMBLY SYSTEM: WORKSHOPSME, Mar. 5-6, Boston, MAContact: 313/271-0039

COMPUTER INTEGRATED MANUFACTURING ANDCOMMUNICATIONS CONFERENCE AND EXHIBITCASA/SME, Mar. 10-13, Boston, MAContact: 313/271-1500 (ext. 374)

ELEORONICS MANUFACTURING TECHNOLOGIESAND SYSTEMS CONFERENCE (EMTAS '86)SME, Mar. 17-20, Los Angeles, CAContact: 313/271-1500 (ext. 372)

SYSTEMS 1 INTERNATIONAL CONFERENCEAND EXPOSmONCBEMA/EIA/NEMA/SME, Mar. 24-26Chicago,ILContact: 313/271-1500 (ext. 298)

APRIL 1986

MANUFAcruRING PRODUCTIVITYCONFERENCE AND EXPOSmONSME, Apr. 1-3, Kansas Gty, MOContact: 313/271-0777

DEVELOPING A PRODUCTIVE AUTOMATEDASSEMBLY SYSTEM: WORKSHOPSME, Apr. 10-11, Chicago, ILContact: 313/271-0039

ROBOTS '86 CONFERENCE AND EXPOSITIONRI/SME, Apr. 20-24, Chicago, ILContact: 313/271-0777 (ext. 255)

Copies of the summaries of papers referenced in this and future Bulletins are not available from MTIAC. For copies ofthe source articles, you may refer, depending on the nature of the material to:

National Technical Infonnation Service (NTIS) Defense Technical Infonnation Center (OTIC)U. S. Department of Commerce Cameron Station

orSpringfield, VA 22151 Alexandria, VA 22314

(800) 336-4700 (202) 274-7633

or

The publisher of the journal in which the document appeared.

MTIAC Products and Services

MTlAC's objective is to collect, analyze and disseminate timely information on the characteristics and utilization ofmanufacturing technology for the production of defense materiel. Its services are available to all sectors of governmentand industry within the limitations of the contract. The Center's principal services include:

Technical advice and assistanceAccess to bibliographic data, data bases and reference sources

Written reports in the form of technology assessments, state of the art reviews and handbooks

MTIAC is a full-service information analysis center managed by Cresap, McCormick and Paget Division of TPF&C, Inc.,a firm which provides technical services to government and industry. The principal sub-contractor is the lIT ResearchInstitute, one of the largest not-for-profit research organizations in the United States.

MTIAC is able to draw on the expertise of both organizations to

• conduct searches for manufacturing technology information

• answer technical inq uiries

• conduct studies within its established scope

An initial mquiry and quick response to determine available data can be accommodated at no charge. For furtherinformation call MTIAC at 312-567-4730 and request an informational brochure.

Thomas B. TurnerDirector

All data and information herein reported are believed to be reliable; however no warrant, expressed or implied, is to beconstrued as to the accuracy on the completeness of the information presented.

The MTIAC Current Awareness Bulletins are prepared under the sponsorship of the Department of Defense, underContract DLA-900-84-C-1508 and are available only to qualified U.S. users. Some of the reports referred to in this andsubsequent issues may be subject to current U. S. export control laws and regulations.

Manufacturing Technology

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Distribution Clarification

AMMTIAC REVIEW

Reviewer’s Explanation: The rights and the Distribution Authority to all IAC publications reside with the Defense Technical Information Center (DTIC) and the appropriate IAC. As the proprietor of these publications, AMMTIAC reviewed the past Current Awareness Bulletins for distribution limitations and found them to contain open/unlimited information consistent with a public release newsletter (Distribution Statement A). In the absence of a clearly recognized distribution statement and conforming to the IAC intent to disseminate unlimited information through a newsletter, AMMTIAC has marked this publication with the distribution statement:

“Approved for Public Release; Distribution is Unlimited”.