ASTM D732 defines shear strength testing for plastics, a punch type shear test. This test method covers the procedure for determining the shear strength of composite materials in the form of sheets, sheets and molded shapes.
Sample thicknesses can vary between 0.050” and 0.500”. A 1” diameter disc will be pierced by the sample using special equipment. The ASTM D732 test covers the punch-type shear test and is intended for use in determining the shear strength of test specimens of organic plastic in the form of sheets and molded discs 0,127 to 12,7 mm (0,050 to 0,500 inches) thick.
Shear strength obtained with a punch-type tool is one of the well-known methods of comparing materials or obtaining data for engineering design. However, it must be recognized that for the end-use application there may be many factors that are not considered in this test method, such as stress-intensifying geometries and shear rates, that can profoundly affect shear strength. In addition, the calculation of the shear strength by dividing the load by the shear strength area should not be interpreted as the shear strength value being calculated by dividing the load by the slip edge area (perimeter X thickness). thus obtained is only a material property, regardless of thickness.
Shear strength testing is used to determine the load that a plastic or film will yield when cut between two metal edges. Shear strength results are important for designers of film and sheet products that tend to be subject to shear loads or in applications where applied crush loads are a risk.
Results are expressed as shear force and are given in MPa or psi units. Shear strength is calculated by dividing the force required to cut the specimen by the area of the cutting edge. The area of the cut edge is equal to the circumference of the punch multiplied by the thickness of the sample.
EUROLAB, together with its state-of-the-art accredited laboratories and expert team, helps you get precise and fast results within the scope of ASTM D732 test.
To get an appointment, to get more detailed information or to request an evaluation, you can ask us to fill in our form and reach you.
EUROLABreporting and certification activities, United Accreditation Foundation (UAF), Turkish Accreditation Agency (TÜRKAK) ve Enterprise Accreditation Foundation (EAF) based on the accreditation provided by the accreditation body. The Enterprise Accreditation Foundation (EAF) accreditation body is also a signatory of the United Nations (UN GLOBAL COMPACT) organization.
