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.
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).
Coefficient of elasticity. Alternate term for modulus of elasticity.
Cohesive strength. Theoretical stress that causes fracture in tension test if material exhibits no plastic deformation.
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.
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.
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.
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)。