For example it is possible to observe the face of a specimen with a painted speckle on it in order to determine its displacement fields during a tensile test.
22.
Stress strain curves of various materials vary widely, and different tensile tests conducted on the same material yield different results, depending upon the temperature of the specimen and the speed of the loading.
23.
These machines include a 20 meters long wind tunnel to study fluid mechanics, a multi-axis tensile test machine, to study mechanical behavior of complex materials and a micro-scale fatigue machine to study material life cycle.
24.
Geomembranes are most commonly tested for tensile strength using one of three methods; the uniaxial tensile test described in ASTM D639-94, the wide-strip tensile test described in ASTM D4885-88, and the multiaxial tension test described in ASTM D5617-94.
25.
It is also convenient to define an "'Equivalent tensile stress "'or "'von Mises stress "', \ sigma _ v, which is used to predict yielding of materials under "'multiaxial loading conditions "'using results from simple uniaxial tensile tests.
26.
Geomembranes are most commonly tested for tensile strength using one of three methods; the uniaxial tensile test described in ASTM D639-94, the wide-strip tensile test described in ASTM D4885-88, and the multiaxial tension test described in ASTM D5617-94.
27.
The British Standards BS 1970 and BS 1970 : 2012 ( updated version ) define, for instance, the bottles filling characteristics, safety instructions, allowed materials and components as well as testing methods such as tensile tests for PVC bottles.
28.
The elastic properties of plastics are therefore distinguished according to the time scale of the testing to short-time behavior ( such as tensile test which lasts minutes ), shock loading, the behavior under long-term and static loading, as well as the vibration-induced stress.
29.
Tensile tests of MWCNTs attached to atomic force microscope ( AFM ) tips at both ends show that fracture occurs at the outer shell in a way such that majority loading occurs at the outer shell and little load transfer occurs to the inner shells.
