| 1. | An analysis of the cause of absorber seat fracture of an automobile 汽车减震器支座疲劳开裂原因分析 |
| 2. | Considered anti - crack for asphalt surface and split for lean concrete base , design standard of asphalt pavement with lean concrete base is developed 考虑控制面层反射裂缝和基层疲劳开裂,提出贫混凝土基层沥青路面的设计标准。 |
| 3. | The serious overloading of vehicles and the shortcomings of highway surface designs have left many highways in early fatigue cracks and tracks 摘要近年来重载交通的日益严重和当前路面结构设计存在缺陷使得很多公路出现早期疲劳开裂和车辙现象。 |
| 4. | Furthermore , the fatigue parameters of polyester fiber rein - forced asphalt concrete are decreased , which imply that the fatigue cracking resistance of asphalt concrete is improved 同时,聚酯纤维沥青混凝土的损耗模量降低,其抵抗疲劳开裂的能力增强。 |
| 5. | Features : high strength , high modulus , low extensibility , good anti - fatigue and anti - tearing performance resistant to high - temp erature track , delaying and decreasing crack reflection 特点:高强度、高模量,低延伸率、抗疲劳开裂,耐高温车辙,延缓减少反射裂缝。 |
| 6. | Bracing members in concentrically braced structures may be subjected to large cyclic deformations due to local buckling during a severe earthquake causing possible early fractures 摘要在罕遇地震下,框架中心支撑结构中的钢支撑常因局部屈曲位置的低周疲劳开裂而过早退出工作。 |
| 7. | Fatigue cracking is a main form of structural damage of asphalt pavements ( chiefly including asphalt pavement with half rigid base course and ac overlay on portland cement concrete pavement ) 疲劳开裂是沥青类路面(主要为半刚性基层沥青路面与水泥混凝土路面沥青混凝土加铺层结构)的主要破坏形式。 |
| 8. | Cracking failure of centrifugal compressor ' s impellers was analyzed , the welding craters in the impellers led to stress concentration . the unsteady gas flow accelerated the development of cracks in the impeller 摘要针对某石化公司离心压缩机叶轮多次发生开裂、掉块等故障以及裂纹形成机理进行了分析。分析结果表明了叶轮开裂原因系疲劳开裂,叶轮焊接缺陷产生了焊接弧坑,造成表面应力集中,气流激振加速了裂纹扩展。 |
| 9. | This was related to the changes in the wear mechanisms induced by the introduction of the mmt as the filler , under water - lubricated condition , up was dominated by adhesion wear and fatigue peeling off in water - lubricated sliding against the steel , though the adhesion wear and fatigue peeling off were considerably abated for the nanocomposite under the same test condition 这是由于蒙脱土的加入改变了材料的摩擦磨损机理。不饱和聚酯主要是粘着磨损与疲劳开裂。在水润滑条件下,纳米复合材料的磨损形式发生改变,而在干摩擦条件下,纳米复合材料的磨损形式依旧以粘着磨损为主。 |