Group 1 - Wuhan enterprises have led or participated in the formulation and revision of over 6,400 national and industry standards, marking a significant increase and positioning the city among the top in China for standard innovation capability [1][2] - China Information Communication Technologies Group has established itself as a benchmark in the global communication sector, leading the development of over 700 international, national, and industry standards, including the first practical optical fiber meeting international standards [2] - Changfei Fiber Optic Cable Co., Ltd. has transitioned from "using standards" to "setting standards," with over 10 experts actively involved in international organizations like IEC and ITU, contributing to multiple international standards [2] Group 2 - Wuhan Ship Machinery Co., Ltd. has developed key marine engineering equipment that breaks international monopolies, leading to the establishment of international standards for offshore platform lifting devices, resulting in contracts for 19 ships/platforms worth over 8 billion yuan during the 14th Five-Year Plan [3] - Wuhan Zhongke Innovation Technology Co., Ltd. has participated in the formulation of nearly 100 non-destructive testing standards, with 69 officially published, establishing itself as a benchmark in China's ultrasonic non-destructive testing industry [3] - Wuhan Yuanda Hongyuan Co., Ltd. has led the development of multiple industry standards since 2009, achieving significant sales growth and establishing partnerships with major companies, with expectations for exponential market growth in the next 3-5 years [3]

残余应力是指产生应力因素消失 ( 如：载荷去除、加工终止、温度均匀、相变完成等 ) ，但形变、体积变化仍不均匀，为保持平衡而在 构件内部存留应力。残余应力是构件力学性能最主要的影响因素之一，如拉伸残余应力会降低拉伸屈服极限、提高压缩屈服极限，压缩 残余应力正好相反 ; 宏观残余应力会产生形变、并影响疲劳寿命，微观残余应力导致组织内产生微裂纹发生脆性破坏。在服役过程中， 残余应力与工作应力叠加容易产生二次变形和应力重新分布，产生变形、开裂、耐腐蚀性能及构件整体稳定性下降，如当交变荷载工作 时区域应力达到屈服点时会产生局部塑性变形 ; 高温工作条件下产生高温蠕变开裂 ; 腐蚀环境下产生应力腐蚀开裂。 残余应力测量是通过实验测试方法了解构件残余应力分布的技术，尤其适用于复杂构件。主要分为有损测试法（如钻孔法、切槽法）和 无损测试法，其中钻孔法应用广泛，通过应力释放原理测量应力。 中国市场规模现状及未来趋势 残余应力是零件表面完整性质量的关键评价指标，直接影响着零件的开裂失效、加工变形和尺寸稳定性。通过残余应力检测和量化分 析，能够对加工工艺评估和工艺优化提供量化依据，能够实现零部件变形及失效问题分析和针对性解决，实 ...