This type of NASA compression after impact (CAI) of compression of the test device is an alternative to the more popular Boeing compression after the compression of the device of the impact test. The NASA devices are 10 ” long and 5″ in width. As in Boeing method, a quasi-isotropic laminate is typically tested. The NASA device version includes four…
The untabbed sample is 3 “long, 1” wide, and the thickness can vary depending on the material and layup in the testing phase. Northrop Specification recommended thicknesses from 0.125 “to 0.250”. The standard sample contains a central “diameter hole 0.25, even if the unit has proved effective, even for compression of specimens without holes, if end crushing does not occur.…
This common method in aerospace concerns compression tests on plates, rolled experimentation multidirectionaldetermination of the post-impact compressive strength. The methodis also useful for the compression tests after impact on composite materials, the company has acquired a new realization of controlled impact machine. The impact receiving sample is placed in the test assembly and after the application of the load of…
