[力] 切口冲击强度
The results showed that with increasing content of TPU, elongation at break and notched impact strength of the blends increased.
拉伸强度和断裂伸长率均随辛醛含量的增加而降低。
The viscosity of modified PET was increased with lower crystallinity, smaller size of crystal and improvement of notched impact strength.
改性PET的结晶度降低，晶粒尺寸减小，缺口冲击强度提高。
With increasing content of the fillers, the notched impact strength and the tensile strength of PVC-matrix composites improved simultaneously.
随着复合粒子用量的增加，复合材料的强度和韧性同时提高，复合粒子高含量时，复合材料的拉伸强度稍有下降。
The relationship between fracture morphology and notched impact strength of PC/ ABS blends has been stu***d in various raw materials and PC/ABS ratios.
研究了不同原料和配比的PC/ABS共混合金冲击破坏断面形态和缺口冲击强度之间的关系。
The results showed different blending methods had little effects on tensile strength of the blends, but obvious effects on notched impact strength and morphology.
结果发现，共混方式对共混体系拉伸强度影响不大，但对冲击强度和断面形态影响较大。
When TAS2A is applied in PP blending system, the products of which have outstanding notched impact strength and flexural strength, the lubricity is superior to ot…
将TAS 2A用于PP共混体系时，其制品缺口冲击强度和弯曲强度性能优异，其润滑性优于其它品种的润滑剂。
After ultraviolet irradiating, the Young's modulus and tensile yield strength of HDPE are increased; its elongation at break and notched Izod impact strength are decreased.
紫外辐照后，HDPE的杨氏模量和拉伸屈服强度提高，但断裂伸长率和缺口冲击强度下降。
Many round voids which result in stress concentration easily are found on SEM micrographs of fracture surface after heat-treatment, so the notched izod impact strength of the sample decreases.
由热处理后试样冲击断面的SEM照片可见水分挥发留下的空洞，这些空洞容易形成应力集中点，因而导致冲击韧性降低。
The notched Izod impact strength of alloy increases with the increasing of EMG content in the condition of keeping other mechanical properties.
而随着EM G含量的增加，材料的冲击强度显著提高，且其它的力学性能基本保持不变。
It has been found that the notched Izod impact strength of the blend first decreased slightly and then increased with the addition of UFPR.
研究发现，随粉末橡胶用量增大，共混物的冲击强度先有所降低然后逐渐上升。
The wollastonite encapsulated by polyethylene glycol (PEG) have been used to increase the notched-impact strength and to improve the low-temperature properties of polypropylene (PP).
聚丙烯（PP）低劣的冲击和低温性能影响了这类通用塑料的工程化和功能化。
The results show that the addition of mica can enhance the flexural strength, flexural modulus, notched Izod impact strength and heat deformation temperature of the composites;
结果表明：云母可有效提高PP的弯曲强度及模量、悬臂梁缺口冲击强度和耐热性能；
The results showed that the impact strength(notched) of the composite was maximum and the mechanical and thermal properties were less decreased, when the dosage of modifier was 12 PHR.
当复合冲击改性剂用量为12份时，材料的冲击强度达到最大值，其它力学和热性能降低不大。
The result showed that the tensile strength property and Vicat softening temperature was increased and notched impact property of PVC/ABS composite was decreased with the glass fiber added.
研究结果表明：随着玻璃纤维添加份数的增加，PVC/ABS合金的拉伸性能和维卡软化温度有不同程度的提高，缺口冲击强度有所下降。
Combining with production practice, process factors that effect HIPS resin notched impact strength are analyzed and effectivemeasures of improving notched impact strength are discussed.
结合生产实际，分析了影响HIPS树脂冲击强度的工艺因素，论述了提高缺口冲击强度的有效措施。
The results showed that the using amount of PC had a great effect on the notched impact strength.
结果表明，对共混体系缺口冲击强度影响较大的为体系中PC的含量。
The notched impact strength of the material was also increased with the in-creasing of laurolactam content.
与未改性浇铸尼龙相比，改性浇铸尼龙缺口冲击强度随十二内酰胺含量的增加而增加；
notched impact strength（缺口冲击强度）是材料力学性能的关键指标，用于衡量含缺口试样在高速冲击载荷下抵抗断裂的能力。它反映了材料在存在应力集中源（如裂纹、缺口）时吸收冲击能量并阻止脆性断裂的特性。
缺口（Notched）
试样上预制的人工缺口（通常为V型或U型）会引发局部应力集中，模拟实际工程构件中的缺陷（如划痕、孔洞）。这种设计能更严苛地评估材料对脆性断裂的敏感性，尤其在低温或高应变速率条件下。
冲击（Impact）
测试通过摆锤或落锤对试样施加瞬时高速载荷（应变速率可达10³~10⁴ s⁻¹），区别于静态拉伸试验。这种动态载荷更接近车辆碰撞、工具跌落等实际工况。
强度（Strength）
此处“强度”指材料吸收冲击能量的能力，单位为焦耳/平方米（J/m²） 或千焦/平方米（kJ/m²）。测试中记录的是试样断裂时吸收的总能量，即冲击韧性值。
根据国际标准ASTM E23《金属材料缺口棒冲击试验方法》，缺口冲击强度定义为：“标准缺口试样在冲击载荷下断裂所吸收的能量，表征材料在特定条件下抵抗脆性断裂的能力”。类似标准还包括ISO 148-1《金属材料夏比摆锤冲击试验》。
来源说明：
Notched Impact Strength（缺口冲击强度）是材料力学性能测试中的一个专业术语，具体解释如下：
缺口冲击强度指材料在带有预制缺口的试样上抵抗冲击断裂的能力。缺口的存在会引发应力集中，模拟材料在实际应用中因结构缺陷或损伤导致的脆弱性，从而更严格地评估材料的韧性。
主要用于塑料、高分子材料、金属等领域，尤其在汽车、航空航天、包装工业中评估材料在复杂应力环境下的可靠性。
如需更详细的测试标准或具体材料数据，可参考材料力学手册或ASTM/ISO相关标准文件。
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