Results 71 to 80 of about 16,656 (248)
Effects of HfC Particles on Crack Initiation and Propagation Behavior of WC/Co Composites
Xibei Gongye Daxue Xuebao, 2019 Tungsten carbide composites were prepared by cold-pressing and hot-pressing sintering; fracture toughness and bending strength of the specimens were tested. The microstructures of HfC/WC/Co composites were observed with the SEM.
doaj +1 more source
Programmable Elastic Wave Control Via Mechanical‐Acoustic Interaction in Bistable Metamaterials
Advanced Science, EarlyView.A mechanically programmable metamaterial based on mechanical‐acoustic interaction enables reconfigurable elastic wave control through bistable state switching. Spatial encoding of peak and valley states tunes band structures and transmission, achieving low‐frequency vibration suppression, waveguiding, and energy localization.
Yuanyuan Li +7 more
wiley +1 more source
Bulletin de correspondance hellénique, 2009 Ένας άβακας στους Δελφούς Πάνω σε ένα λίθο, γνωστό εδώ και πολύ καιρό λόγω μιας επιγραφής (FD III, 4, 189) και τοποθετημένο στο νότιο άνδηρο, στη ΝΑ γωνία του ναού του Απόλλωνα, βλέπουμε δύο σειρές γραμμών και δύο ημικύκλια που εφάπτονται σε δύο από τις γραμμές και τα οποία, από όσο γνωρίζουμε, δεν είχαν επισημανθεί μέχρι σήμερα.
openaire +2 more sources
Advanced Science, EarlyView.Rod Origami (RodOri) springs harness snap‐through instabilities of pre‐stressed curved rods with geometrically programmable buckling behavior. Integrating RodOri springs with distinct geometries yields multistable metamaterials that undergo stepwise reconfiguration via sequential snapping, achieving wide‐range tunability of stiffness and resonance ...
Jeseung Lee +2 more
wiley +1 more source
Structural and thermal analysis of butt joint GTAW of similar and dissimilar materials with distinct groove angles through simulation and mathematical modelling [PDF]
FME Transactions, 2020 The present article discusses the simulation and mathematical modelling of GTAW for various parameters of single and double V-groove butt joint welds.
Kiran Bandaru +3 more
doaj
Interacting Parallel Fluidic Hysterons
Advanced Science, EarlyView.The parallel coupling of fluidic hysterons is introduced, establishing advanced functionalities in inflatable soft systems. A pressure–volume framework reveals how preset volumes Δv∗${\Delta }v^*$ tune nonlinear interactions between hysterons and actuation sequences without changing architecture. Experiments validate the predictions, opening new routes
Katrien Stinissen +2 more
wiley +1 more source
Free Vibration Analysis for Polyester/Graphene Nanocomposites Multilayer Functionally Graded Plates
Фізика і хімія твердого тілаIn the current work, an FGM nanocomposite made of multi-layers of graphene nanoparticles and a polyester-based matrix was constructed using the molds with a hand lay-up technique to attain an accurate shape and reduce defects in the final product.
Shahad Qusi Abd Alqader +4 more
doaj +1 more source
Advanced Electronic Materials, EarlyView.The integration of ultra‐flexible, all‐organic, field‐effect transistor‐based strain sensors to soft structures is reported for the development of sensorized soft robots. The envisaged application is the development of next‐generation, controllable, and observable soft robotic catheters for endoscopic applications, such as drug delivery. Mechanical and
Usama Mahmood +5 more
wiley +1 more source
Advanced Intelligent Systems, EarlyView.A unified, reusable modeling pipeline enables task‐driven design of soft robots across actuator families and task scenarios. High‐fidelity simulations are compressed into compact pseudo‐rigid‐body joint surrogates, while a design‐conditioned meta‐model generates new surrogates from geometry parameters without rerunning finite element method.
Yao Yao, David Howard, Perla Maiolino
wiley +1 more source
Speckle Skin‐Based Multimodal Tactile Perception for Fine Robotic Manipulation
Advanced Intelligent Systems, EarlyView.SpeckleTac, a miniature vision‐based tactile sensor, utilizes a speckle‐pattern skin and optical flow‐based scalable virtual marker tracking. Combined with advanced algorithms, it achieves high‐resolution 3D surface reconstruction, precise contact perception, and stable grasping capabilities.
Jiayuan Zhang +6 more
wiley +1 more source