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ASTM Testing Standards

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title	Equipment and Apparatus:

Apparatus: Universal Testing Machine (UTM) with a deflection transducer, as shown in the figure below.

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Figure 1: Universal Testing Machine (UTM)Image Removed

Figure 2: Deflection transducer setup in a 3-point bend test

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title	Procedure:

Condition the specimen in a chamber if the test environment is not the same as a conditioned environment.
Measure the length, width and thickness at three places in the specimen.
Place the specimeninto the test fixture as shown in the equipment and apparatus section.
Attach the deflection transducer.
Apply a compressive force to the specimen until failure or until a deflection equal to the thickness is reached.

Variable	Quantity
Load rate	6mm/min
Failure occurence	3-6 minutes

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title	Reported during the test:

Force versus crosshead displacement, force versus deflection data continuously, or at frequent intervals (around 2-3 recordings per second, with a target minimum of 100 recorded data points)
If there are any initial failures, record force, displacement and mode of damage where the failure occurs.

Record the max force, failure force, head displacement and the deflection at the moment of ultimate failure.
For ultimate failure modes, record the mode, area and location of ultimate failure for each material.
Calculations:
- For 3-Point Mid-Span Loading:
- For 4-Point, Quarter-point loading:
- For 4-Point (Third Point) Loading:

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title	Equipment and Apparatus:

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Figure 1: Universal Testing Machine (UTM)

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title	Procedure:

Measure the specimen in 3 places and report average thickness and width as well as average area.

Variable	Quantity
Failure occurence	1 to 10 min

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