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NOVEL APPROACHES IN STRUCTURAL AND THERMAL ANALYSIS OF
BUILDINGS
Dariusz ALTERMANThe University of Newcastle
Australia
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Artificial Intelligence methods
Uniaxial tensile tests
Image Analyse techniques
Energy efficiency of buildings
OVERVIEW
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- air content (A)- micropores content(A300)- specific surface (alfa)- spacing factor (L)- cracks
Image Analysis
- modulusof elasticity
Mechanical tests
- Vickerstest- CoV of diagonals
Information from the object
AE
- AE signal
DATABASE
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Artificial Intelligence procedures can revealunknown features of reality to an Engineer
Numerous multiNumerous multi--dimensional data comes from dimensional data comes from the real world and the real world and areare often not exactly often not exactly accurate, complete but fuzzy or scatteredaccurate, complete but fuzzy or scattered
ARTIFICIAL INTELLIGENCE TOOLS
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AIEVALUATEDPROPERTIESOF CONCRETE
(frost resistance,compressive and tensilestrength, ...)
OBSERVEDFEATURES
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approximation classification ???
TYPE OF ANALYSIS
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hiddenneuronetc.
hiddenneuron
BACKPROPAGATION NETWORK
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0 0 .5 1 1 .5 2 2 .50
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F unc t ion A pp rox im a t ion
Inpu t
Output: -, Target: +
fc
w/c
PREDICTION
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9HIGH PERFORMANCE CONCRETE
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UNIAXIAL TENSILE TESTS
EFFECTS OF SECONDARY FLEXURE
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11LOADING
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With eliminationWithout elimination
THE EFFECTS OF SECONDARY FLEXURE
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13IMPREGNATION TECHNIQUE
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Typically brick veneer, cavity brick or lightweight construction (some single skin)
Developers in the past have paid little attention to climate design or energy consumption and often poor use of materials
Widespread use of air conditioning
Modelling using appropriate software (AccuRate, EnergyPlus, NatHERS, FirstRate, BERS Pro, NUMBERS)
One of the dominant parameters is the thermal resistance (R-value) of the external walls
AUSTRALIAN HOUSING
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OTHER MODULES
INSTRUMENTATION
Exterior Wall Roof Cavity
Insulation R3.5
T-type Thermocouple Locations
Heat Flux Sensor Locations
Interior Wall600mm
600mm
Floor Slab
Sarking
Cement Render (Average Thickness 10mm)
R1 Polystyrene Insulation
Fibro-Cement
Sarking
Roof Cavity
Insulation R3.5
T-type Thermocouple Locations
Heat Flux Sensor Locations
600mm
600mm
600mm
Floor Slab
Timber Framing with R1.5 Batts
Interior Wall
Cement Render (Average Thickness 10mm)
Exterior Wall
Sarking
Roof Cavity
Insulation R3.5
T-type Thermocouple Locations
Heat Flux Sensor Locations
600mm
600mm
600mm
Floor Slab
Plasterboard
Timber Framing with R1.5 Batts
Reflective Foil Insulation
Insulated Brick Veneer Insulated Reverse Brick Veneer
Insulated Cavity Brick
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Temperature Heat flux profilesSolar radiationWeather conditionsHeating/cooling energy
INSTRUMENTATION
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Thermal resistance of each walling system determined from guarded hot box tests
Representative housing test modules for each walling system observed over several years in Newcastle (Interior temperature “free floating” or “controlled” by heating/cooling)
Guarded hot box(2.4m x 2.4 m walls)
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http://www.monier.co.nz/AboutUs/Environmental/Default.aspx
THERMAL MASS
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Artificial Intelligence methods can help Artificial Intelligence methods can help you better understand different you better understand different phenomena in your phenomena in your research fieldresearch field
