The video reviews a variety of tasks, ranging from working with pore filler, finish, and hand sanding, to the precise dimensional precision of small CNC milling in aluminum bronze for tuning machine frames and custom buttons.
Tensile cracks shatter classical speed limits
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 results found inconsistent
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’s additively manufactured toolholder wins R&D 100 Award
Kennametal received a 2023 R&D 100 Award for its additively manufactured toolholder developed for machining large engine and transmission housings.
$3 million NSF grant to help train the next generation to tackle some of the world’s challenges
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.