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Lab Testing of Mechanical Properties
Lab Testing of Mechanical Properties
About ASTM International
About ASTM International
Operates over 12,000 global standards
"Offers global access to fully transparent standards development "
ASTM's Five Strategic Objectives
ASTM's Five Strategic Objectives
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ASTM D-882
ASTM D-882
- "Standard Test Method for Tensile Properties of Thin Plastic Sheeting"
- This standard defines film as less than 1.0 mm in thickness
- Specimens are tested using a Universal Testing Machine (see below)
Specimens/Coupons
Specimens/Coupons
Coupons are uniform width and thickness
At least 50 mm longer than grip separation
Width between 5 mm and 25.4 mm
Sample Coupon
Sample Coupon
Universal Testing Machine (UTM)
Universal Testing Machine (UTM)
Analysis of a plastic shopping bag using the universal testing machine
> Mechanical properties such as tensile strength, strain percent, and other mechanical properties are determined by testing specimens using a universal testing machine (UTM).
> Mechanical properties such as tensile strength, strain percent, and other mechanical properties are determined by testing specimens using a universal testing machine (UTM).
> The UTM exerts a stress on the specimen by pulling one end of the specimen away from the other end which is fixed and stationary.
> The UTM exerts a stress on the specimen by pulling one end of the specimen away from the other end which is fixed and stationary.
> Results are generally recorded to a computer and appear on the screen.
> Results are generally recorded to a computer and appear on the screen.
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