Before undertaking tests on a specimen of unknown properties, it is essential to check that reliable and accurate readings are obtained on a sample of known properties using the indenter and the load ...

With a simple sample geometry, a 3-point-bend test can be used to obtain stress-strain behavior, elastic modulus in bending (flexural modulus), and failure limits in bending. The standards ASTM E855, ...

In hard disk drives, digital information is stored and retrieved magnetically by a “read head” that flies over the disk within tens of nanometers of its surface. Figure 1 is a photograph of a read ...

President, Wyoming Test Fixtures Inc. Unlike metals and plastics, for which tensile and compressive properties are the same or very similar, unidirectional composites exhibit significantly different ...