Strength Testing Methods

Strength Testing Methods Compressed agglomerates often fail in tension along their diameter. This is the basis of the commonly... 

Probe tack and peel strength test methods are almost same, except for test area and test time, in that the measurements are taken with the PSA removed from the substrate. So the peel strength is influenced by the Tg also, so that if the Tg of a PSA is sufficiently low, the wettability will increase after applying it... 

Strain curve is provided. They can be programmed to be extremely useful in quality control. See testing, tensile testing-machine test rate The speed at which its cross-head moves. An increase in strain rate typically results in an increasing yield point and strength. Test methods specify speed of testing for the different materials (soft to rigid) to be tested since test results can be affected by the time-dependent factor. 

ISO 8659 1989 Thermoplastics valves - Fatigue strength - Test method. 

Anaerobic RT/5-10 mins (firm to touch) 24 hrs (full strength). Test Methods DIN, ISO... 

Long-term performance of bonded joints cannot be predicted from the properties of the adhesive and adherent surfaces. Complex interfacial and interface chemistry requires the testing of bonded structures. There are close to 50 bond-strength test methods accepted by ASTM International for development of data on adhesive joint properties. Typically tensile, lap-shear, and peel are the main adhesive bond configurations that are used for testing. 

H. C. Jung, T. Hinoki, Y. Katoh, and A. Kohyama, "Development of a Shear Strength Test Method for NITE-SiC Joining Material," J. Nucl. Mater., 417[l-3] 383-86 (2011). 

The lap-joint shear strength test method is chosen here for weld quality evaluation. The dimensions and weld configuration of the specimen are shown in Figure 1. In order to reduce bending dming the strength test, the weld line is oriented parallel with the tensile loading direction. More information on this technique can be found in reference [8]. 

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