V2EX ultimate tensile strength

Ultimate Tensile Strength

定义 Definition

Ultimate tensile strength(极限抗拉强度):材料在拉伸试验中所能承受的最大工程应力(对应载荷峰值),常用来衡量材料在被拉断前的最高承载能力,单位常见为 MPa。在工程语境中也常简称 UTS。(注:与“屈服强度”不同,屈服强调开始发生明显塑性变形的应力水平。)

例句 Examples

The ultimate tensile strength of this steel is about 550 MPa.
这种钢的极限抗拉强度大约是 550 MPa。

Although the alloy shows good ductility, its ultimate tensile strength drops significantly at high temperatures.
尽管这种合金延展性很好,但在高温下它的极限抗拉强度会显著下降。

发音 Pronunciation (IPA)

/ltmt tnsal strθ/

词源 Etymology

ultimate 来自拉丁语 ultimus,意为“最末的、最终的”,在材料学里引申为“达到峰值/极限的”。tensile 源自拉丁语 tendere(拉、伸),表示“可承受拉伸的”。strength 源自古英语,表示“强度/力量”。合起来就是“拉伸情况下能达到的极限强度”。

相关词 Related Words

文学/著作中的用例 Literary / Notable Works

  • ASTM E8/E8M(Standard Test Methods for Tension Testing of Metallic Materials,金属材料拉伸试验标准)
  • ASM Handbook, Volume 8: Mechanical Testing and Evaluation(ASM 手册:机械测试与评估)
  • Callister & Rethwisch, Materials Science and Engineering: An Introduction(《材料科学与工程导论》)
  • Gere & Goodno, Mechanics of Materials(《材料力学》经典教材)
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