3 ms·
ultrasound works quite well as well - but no NRE technique is perfect https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7503374/ https://www.ncbi.nlm.nih.gov/pmc/ar
by avs733 3y ago
ultrasound works quite well as well - but no NRE technique is perfect
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7503374/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7503374/
- eternityforest 3y agoDidn't they specifically refuse to do any testing because they trusted that proprietary acoustic system?
- thsksbd 3y agoThe paper is from 2020. My understanding is that composite testing is still in its infancy. Also note that the hull was 5 inches thick (safety factor > 2.5). Depending on the dispersion properties of the medium ultrasound might not penetrate and get a good result. In Ti (some alloys at least), for example, you cant get much signal past a couple of inches due to the scattering (from the grains?)
- namibj 3y agoThat was supposed to hear the hill cracking/creaking. Ultrasound for delamination is like medical ultrasound and looks for a discontinuity in the sheet from the delamination.
- eternityforest 3y agoI think someone wanted to do the delamination hull scan and they skipped it presumably because they trusted the creak listener