Embed Size (px)
Citation preview
cetin
ney@
mai
l.ute
xas.e
du
The
Uni
vers
ity o
f Te
xas
at A
ustin
, C
harle
s E
. Tin
ney,
Ph.D
., Ja
yant
Siro
hi, P
h.D
., (5
12) 4
71-4
147
http
://w
ww.
ae.u
texa
s.edu
/fac
ulty
site
s/tin
ney/
Special thanks to: Jonathan Bruss Guadalupe “Lupe” Garza Timothy Valdez Christopher McCormick James Stephenson Miguel Ibarra Jeremy Albright Craig Dolder Woutijn Baars Linley Duke Pablo Cortez Edward Zihlman Travis Crooks David Gray Ricardo Palacios Ulisses Hernandez Antonio Paramo Christopher Rangel Kevin Sinkar Dr. Jeremy Jagodzinski Blake Stasney Dennis Fillip Brian Donald Alexis Avram Lauren Cooper
The open jet wind tunnel and fully anechoic chamber at the J.J. Pickle Research Campus of The University of Texas at Austin
Sound Treatment
cetin
ney@
mai
l.ute
xas.e
du
The
Uni
vers
ity o
f Te
xas
at A
ustin
, C
harle
s E
. Tin
ney,
Ph.D
., Ja
yant
Siro
hi, P
h.D
., (5
12) 4
71-4
147
http
://w
ww.
ae.u
texa
s.edu
/fac
ulty
site
s/tin
ney/
Sound treatment: acoustic panel and wedge mount
4.14".03"
4.00
"
105°1
1.50
".0
3"
70°1
1.50" .03"
1.41
"
Major Material: steel, perforatedGauge: 16 Surface Finish: millHole Pattern: staggeredHole Size: 3/16"Hole Centers: 1/4"Length: 96"Width: 48"
Y
Z
1/2" Hem 23.50" .25"
47.50" .25"
Part B
Cross sectional view: Parts A and B
Part A
Y
Z
X
The University of Texas at AustinPRC chamber wedge mountC.E.Tinney: (512) [email protected]
D
C
B
AA
B
C
D
12345678
8 7 6 5 4 3 2 1
THE INFORMATION CONTAINED IN THISDRAWING IS THE SOLE PROPERTY OF<INSERT COMPANY NAME HERE>. ANY REPRODUCTION IN PART OR AS A WHOLEWITHOUT THE WRITTEN PERMISSION OF<INSERT COMPANY NAME HERE> IS PROHIBITED.
PROPRIETARY AND CONFIDENTIAL
NEXT ASSY USED ON
APPLICATION
DIMENSIONS ARE IN INCHESTOLERANCES:FRACTIONALANGULAR: MACH BEND TWO PLACE DECIMAL THREE PLACE DECIMAL
INTERPRET GEOMETRICTOLERANCING PER:
MATERIAL
FINISH
DRAWN
CHECKED
ENG APPR.
MFG APPR.
Q.A.
COMMENTS:
DATENAME
TITLE:
SIZE
BDWG. NO. REV
WEIGHT: SCALE: 1:10
UNLESS OTHERWISE SPECIFIED:
SHEET 1 OF 1
UTWMDO NOT SCALE DRAWING
24in wedge depth. Open cell, fiber-free melamine foam, Class 1 fire-rated ASTM E84 and UL 1715 certified,
Wedge mount, fabricated by EVS metal. Material: round hole perforated cold-rolled-steel: 16 gauge, 3/16in holes on 1/4in centers, staggered pattern, 50% open area.
cetin
ney@
mai
l.ute
xas.e
du
The
Uni
vers
ity o
f Te
xas
at A
ustin
, C
harle
s E
. Tin
ney,
Ph.D
., Ja
yant
Siro
hi, P
h.D
., (5
12) 4
71-4
147
http
://w
ww.
ae.u
texa
s.edu
/fac
ulty
site
s/tin
ney/
Testing at ETS-Lindgren in Cedar Park, Texas. Special thanks to Jeff Schmitt, Mike Black, Einar Ristroph and John Phillips, ~October, 2009
Large mock-up wedge installed in impedance tube at ETS-Lindgren in Cedar Park, Texas. ~October, 2009
Look-alike contest at ETS Lindgren in Cedar Park, Texas, ~October, 2009
Mock-up wedges for impedance tube tests. (Left) 24inx24in base and (Right) 8inx8in base. ~October, 2009
cetin
ney@
mai
l.ute
xas.e
du
The
Uni
vers
ity o
f Te
xas
at A
ustin
, C
harle
s E
. Tin
ney,
Ph.D
., Ja
yant
Siro
hi, P
h.D
., (5
12) 4
71-4
147
http
://w
ww.
ae.u
texa
s.edu
/fac
ulty
site
s/tin
ney/
Mock-up wedge mount installed on interior of chamber wall, ~December, 2009
High frequency normal incidence sound absorption coefficient for large 24inx24in base. ~October, 2009
Mock-up wedge mount with acoustic wedge panel, ~December, 2009
Low frequency normal incidence sound absorption coefficient for large 24inx24in base. ~October, 2009
50 100 150 200 2500.4
0.5
0.6
0.7
0.8
0.9
1
f [Hz]
Nor
mal
Inci
denc
e Ab
sorp
tion
Coe
ffici
ent,
3inch cavity4inch cavity5inch cavity
100 200 300 400 500 600 700 8000.6
0.65
0.7
0.75
0.8
0.85
0.9
0.95
1
f [Hz]
Nor
mal
Inci
denc
e Ab
sorp
tion
Coe
ffici
ent,
4inch cavity
cetin
ney@
mai
l.ute
xas.e
du
The
Uni
vers
ity o
f Te
xas
at A
ustin
, C
harle
s E
. Tin
ney,
Ph.D
., Ja
yant
Siro
hi, P
h.D
., (5
12) 4
71-4
147
http
://w
ww.
ae.u
texa
s.edu
/fac
ulty
site
s/tin
ney/
Installing wedge mounts on south wall, ~March, 2010 Acoustic panels installed on ceiling, ~May, 2010
Acoustic wedge with wedge panel, May, 2010 Acoustic panels installed on east and south walls, ~May, 2010
cetin
ney@
mai
l.ute
xas.e
du
The
Uni
vers
ity o
f Te
xas
at A
ustin
, C
harle
s E
. Tin
ney,
Ph.D
., Ja
yant
Siro
hi, P
h.D
., (5
12) 4
71-4
147
http
://w
ww.
ae.u
texa
s.edu
/fac
ulty
site
s/tin
ney/
Electrical and lighting layout
cetin
ney@
mai
l.ute
xas.e
du
The
Uni
vers
ity o
f Te
xas
at A
ustin
, C
harle
s E
. Tin
ney,
Ph.D
., Ja
yant
Siro
hi, P
h.D
., (5
12) 4
71-4
147
http
://w
ww.
ae.u
texa
s.edu
/fac
ulty
site
s/tin
ney/
Electrically isolated access holes in west wall of chamber for instrumentation lines, ~October, 2009
Electrical conduit access holes. ~September, 2009
Drop down EcoSense LED ceiling lights (low heat, no noise), ~March, 2010
Drilling through concrete floor to access embedded PVC electrical conduit. ~September, 2009
