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材料百科
材料百科A-Z之【C】
2020-11-20 11:11:03     浏览:157 次

Charpy impact test. Method for determining behavior of materials under conditions favorable to brittle fracture. Used where results of a tension impact test would not be significant. It is the most popular impact test. Test is performed by striking a notched specimen supported as simple beam with a falling weight. Results are reported as energy absorbed in fracture and a description of the fracture. ASTM E-23 describes test for metals, ASTM A 327 for cast iron, ASTM D-256 for plastics and ASTM D-758 for plastics at subnormal and elevated temperatures.

夏比冲击试验。于脆性断裂的条件下确定材料性能的方法。该方法用于拉伸冲击试验的结果不显著时。这是最为流行的冲击试验。该试验是通过使用下降的重量撞击一个作为简单梁支承带有缺口的试样来进行。其结果记录为断裂吸收的能量和关于断裂的描述。ASTM E-23描述金属试验,ASTM A 327描述铸铁试验,ASTM D-256描述塑料试验,以及ASTM D-758描述低温和高温下的塑料试验。


Clash-Berg test. Method for determining stiffness of plastics as a function of temperature by a torsion test (ASTM D-1043). Test consists of direct measurements of apparent modulus of rigidity over wide temperature range.

克拉什-伯格试验。通过扭转试验测定塑料刚度随温度变化的方法(ASTM D-1043)。测试包括在较宽的温度范围内直接测量表观弹性模量。


Cleavage strength. Tensile load (lb/in. of width) required to cause separation of a 1-in. long metal-to-metal adhesive bond under the conditions set in ASTM D-1062.

劈裂强度。根据ASTM D-1062规定的条件,造成1 in.长的金属-金属粘合分离所必需的拉伸负荷(宽度:lb/in.)。


Climbing drum peel test. Method for determining peel resistance of adhesive bond between a relatively flexible and rigid material. (ASTM D1781).

爬鼓剥离试验。用于测定相对柔性和刚性材料之间的粘合剂耐剥离性的方法。(ASTM D1781)。


Coefficient of elasticity. Alternate term for modulus of elasticity.

弹性系数。弹性模量的另一种术语。


Cohesive strength. Theoretical stress that causes fracture in tension test if material exhibits no plastic deformation.

内聚强度。拉伸试验中,如材料未塑性变形,则会导致断裂的理论应力。


Cold crushing strength. Load required to produce fracture in refractory bricks and shapes divided by average cross section area of specimen. (ASTM C-133).

常温抗碎强度。耐火砖产生裂缝所需的负荷和形状除以试样的平均横截面面积。(ASTM C - 133)。


Cold flow. Permanent deformation of plastics remaining after load applied at temperature below distortion temperature is removed. It is an alternate term for creep in plastics (ASTM D-674) and rubber (ASTM D-530).

冷流。消除了于低于变形温度的温度下施加负荷后塑料的永久变形情况。它是塑料(ASTM D-674)和橡胶(ASTM D-530)蠕变的另一个术语。


Complex modulus. Measure of dynamic mechanical properties of material taking into account energy dissipated as heat during deformation and recovery. It is equal to the sum of static modulus of a material and its loss modulus. In the case of shear loading it is called dynamic modulus. See also damping capacity.

复数模量。考虑变形和恢复过程中作为热能耗散的材料动态力学性能的测量。它等于材料的静态模量和其损耗模量之和。此外,于剪切负荷的情况下,它又称为动态模量。具体详情,请参阅阻尼性能。


Compressibility. Extent to which material is compressed in test for compressibility and recovery of gasket materials (ASTM F-36). It is usually reported with recovery.

压缩性。于垫片材料的压缩和复原试验中,材料被压缩的程度(ASTM F-36)。它通常记录为复原。


Compressibility and recovery test. Method for measuring behavior of gasket materials under short time compressive loading at room temperature. ASTM F-36 outlines a standard procedure. Test is not designed to indicate long term (creep) behavior and should not be confused with the plastometer test.

压缩和复原试验。室温下,短时间压缩负荷下垫片材料性能的测量方法。ASTM F-36大概描述了一个标准程序。该试验并非旨在指向长期(蠕变)性能,因此不应与塑性仪试验相混淆。


Compression-deflection test. Nondestructive method for determining relationship between compressive load and deflection under load for vulcanized rubber. (ASTM D-575). Compression fatigue. Ability of rubber to sustain repeated fluctuating compressive loads. (ASTM D-623).

压缩变形试验。硫化橡胶压缩负荷与负荷下挠度关系的无损测定方法。(ASTM D - 575)。压缩疲劳。橡胶承受反复脉动压缩负荷的能力。(ASTM D - 623)。


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