Researchers at the Racah Institute of Physics, Hebrew University of Jerusalem, recently made a discovery that challenges the conventional understanding of fracture mechanics. The team, led by Dr. Meng Wang, Dr. Songlin Shi, and Prof. Jay Fineberg, experimentally demonstrated the existence of “supershear” tensile cracks that exceed classical speed limits and transition to near-supersonic velocities.
Nanoindentation testing is a high-precision indentation test technique that has advantages for nondestructive testing. However, researchers found that when testing the same sample with different Berkovich indenters, inconsistency still arises even if the indenters are regularly calibrated. This inconsistency poses challenges in accurately testing material hardness and comparing data from different laboratories.
Kennametal received a 2023 R&D 100 Award for its additively manufactured toolholder developed for machining large engine and transmission housings.
University of Missouri researchers are using a five-year grant from the National Science Foundation to launch a doctoral training program for future material scientists and engineers.
Rutgers scientists have devised a highly accurate method for creating coatings of biologically active materials for a variety of medical products. Such a technique could pave the way for a new era of transdermal medication, including shot-free vaccinations, the researchers said.
