The flexible hinge is one of the most important components in lamina emergent mechanisms (LEMs), so the design of a new type of lamina emergent SALT HAIR SPRAY torsional (LET) joint can play a key role in its movement performance.This paper presents double- and triple-series LET flexure hinges, designs the structure of the two hinges, and derives t
We experimentally study the dynamics of active particles (APs) in a viscoelastic fluid under various geometrical constraints such as flat walls, spherical obstacles and cylindrical cavities.We observe that the main effect of the confined viscoelastic fluid is to induce an effective repulsion on the APs when moving close to a rigid surface, which de
Ground-based Kids Cup tests are important for studying hypervelocity impact (HVI) damage to spacecraft pressure vessels in the orbital debris environment.We analyzed the damage to composite overwrapped pressure vessels (COPVs) in the HVI tests and classified the damage into non-catastrophic damage and catastrophic damage.We proposed a numerical sim
Pufferfish, globally recognized for its distinctive delicacy, carries high culinary value.However, it is also notorious for the lethal toxicity, and there is a great demand for traceability measures in the commercial trade of pufferfish to assure safety and accountability.This research introduces a novel deep learning approach, utilizing facial rec