Topic
Ultimate tensile strength
About: Ultimate tensile strength is a research topic. Over the lifetime, 129285 publications have been published within this topic receiving 2123768 citations. The topic is also known as: UTS & tensile strength.
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TL;DR: It has been shown that to obtain reproducible results for the strength of tablets prepared at a given compression force, the tablet must break in such a manner that the tensile stress is the major stress.
1,256 citations
TL;DR: In this article, the authors report an investigation of the variation in the mechanical properties of bulk polydimethylsiloxane (PDMS) elastomers with curing temperature, over the range 25 ◦ C to 200 ¼ C, over a range up to 40% strain and hardness of 44−54 ShA.
Abstract: Polydimethylsiloxane (PDMS) elastomers are extensively used for soft lithographic replication of microstructures in microfluidic and micro-engineering applications. Elastomeric microstructures are commonly required to fulfil an explicit mechanical role and accordingly their mechanical properties can critically affect device performance. The mechanical properties of elastomers are known to vary with both curing and operational temperatures. However, even for the elastomer most commonly employed in microfluidic applications, Sylgard 184, only a very limited range of data exists regarding the variation in mechanical properties of bulk PDMS with curing temperature. We report an investigation of the variation in the mechanical properties of bulk Sylgard 184 with curing temperature, over the range 25 ◦ C to 200 ◦ C. PDMS samples for tensile and compressive testing were fabricated according to ASTM standards. Data obtained indicates variation in mechanical properties due to curing temperature for Young’s modulus of 1.32‐2.97 MPa, ultimate tensile strength of 3.51‐7.65 MPa, compressive modulus of 117.8‐186.9 MPa and ultimate compressive strength of 28.4‐51.7 GPa in a range up to 40% strain and hardness of 44‐54 ShA.
1,218 citations
TL;DR: The extraordinary intrinsic plasticity of gradient NG structures offers their potential for use as advanced coatings of bulk materials in both high strength and ductility materials.
Abstract: Nano-grained (NG) metals are believed to be strong but intrinsically brittle: Free-standing NG metals usually exhibit a tensile uniform elongation of a few percent. When a NG copper film is confined by a coarse-grained (CG) copper substrate with a gradient grain-size transition, tensile plasticity can be achieved in the NG film where strain localization is suppressed. The gradient NG film exhibits a 10 times higher yield strength and a tensile plasticity comparable to that of the CG substrate and can sustain a tensile true strain exceeding 100% without cracking. A mechanically driven grain boundary migration process with a substantial concomitant grain growth dominates plastic deformation of the gradient NG structure. The extraordinary intrinsic plasticity of gradient NG structures offers their potential for use as advanced coatings of bulk materials.
1,198 citations
TL;DR: In this paper, fine-grained alloys of Mg-3Al-1Zn-0.2Mn in wt.% were obtained by an equal-channel angular extrusion technique and subsequent annealing at elevated temperatures.
1,193 citations
TL;DR: Wood nanofibrils are used to prepare porous cellulose nanopaper of remarkably high toughness and the large strain-to-failure means that mechanisms, such as interfibril slippage, also contributes to inelastic deformation in addition to deformation of the nan ofibrils themselves.
1,187 citations