CN104180933A - Method for detecting residual stress of in-service composite component through X-rays - Google Patents
Method for detecting residual stress of in-service composite component through X-rays Download PDFInfo
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Abstract
一种用X射线检测在役复合材料构件残余应力的方法，涉及一种检测在役复合材料构件残余应力的方法。本发明是要解决现有检测在役复合材料构件残余应力的方法存在的对构件造成损伤，得到的残余应力大小不准确的技术问题。方法为：一、将金属丝平行粘贴于在役复合材料构件表面；二、用X射线检测法检测粘贴于在役复合材料构件表面的金属丝的残余应力，然后经计算，得出在役复合材料构件各部位的残余应力，即完成。采用本发明测定在役复合材料构件的残余应力，既能保证不会对构件造成损伤，又能得到准确快捷的在役构件的残余应力大小，即该检测方法具有无损、可以检测在役构件、操作简便等优点。本发明应用于在役复合材料构件残余应力的检测领域。The invention provides a method for detecting the residual stress of an in-service composite material component by using X-rays, relating to a method for detecting the residual stress of an in-service composite material component. The invention aims to solve the technical problem that the existing method for detecting the residual stress of the in-service composite material component causes damage to the component and the obtained residual stress is inaccurate. The method is: 1. Paste the metal wire parallel to the surface of the in-service composite material component; 2. Use X-ray detection method to detect the residual stress of the metal wire pasted on the surface of the in-service composite material component, and then calculate and obtain the in-service composite material component. The residual stress of each part of the material member is completed. Using the present invention to measure the residual stress of in-service composite material components can not only ensure that the components will not be damaged, but also can obtain the accurate and quick residual stress of the in-service components, that is, the detection method is non-destructive, can detect in-service components, Easy operation and other advantages. The invention is applied to the detection field of residual stress of composite material components in service.
Description
技术领域technical field
本发明涉及一种检测在役复合材料构件残余应力的方法。The invention relates to a method for detecting residual stress of composite material components in service.
背景技术Background technique
复合材料与金属材料、无机非金属材料、高分子材料并称四大材料体系。由于复合材料的性能优于组分材料，使其逐渐得到了广泛地应用。尤其是近些年，由于复合材料的高比强度、高比模量、性能可设计等优点使其在航空航天等领域拥有良好的发展前景。随着我国对航空工业的要求越来越高，提高复合材料在航空工业中的应用，可以使大飞机减重并提高大飞机的性能。同时，随着复合材料在航空工业中的使用比重不断增加，对复合材料的安全检测也成为现代科学工作者需要重视的课题。由于，大飞机在服役过程中往往会造成各种各样的损伤(冲击损伤等)，通常会给大飞机带来安全性的隐患。为了不影响大飞机的正常工作且保证其安全飞行，复合材料的无损检测技术变得十分重要，而残余应力的检测作为检测的重要指标之一也受到广泛的重视。现阶段针对上述材料并没有有效的方法检测其残余应力。Composite materials, metallic materials, inorganic non-metallic materials, and polymer materials are collectively called the four major material systems. Due to the performance of composite materials is superior to component materials, it has gradually been widely used. Especially in recent years, due to the advantages of high specific strength, high specific modulus, and performance design, composite materials have good development prospects in aerospace and other fields. As my country's requirements for the aviation industry are getting higher and higher, increasing the application of composite materials in the aviation industry can reduce the weight of large aircraft and improve the performance of large aircraft. At the same time, as the proportion of composite materials used in the aviation industry continues to increase, the safety detection of composite materials has become a topic that modern scientists need to pay attention to. Because large aircraft often cause various damages (impact damage, etc.) during service, which usually brings hidden dangers to the safety of large aircraft. In order not to affect the normal operation of large aircraft and ensure its safe flight, the non-destructive testing technology of composite materials has become very important, and the detection of residual stress as one of the important indicators of detection has also been widely valued. At this stage, there is no effective method to detect the residual stress of the above materials.
发明内容Contents of the invention
本发明是要解决现有检测在役复合材料构件残余应力的方法存在的对构件造成损伤，得到的残余应力大小不准确的技术问题，从而提供了一种用X射线检测在役复合材料构件残余应力的方法。The present invention aims to solve the technical problem that existing methods for detecting the residual stress of in-service composite material components cause damage to the components and obtain inaccurate residual stress, thereby providing a method for detecting the residual stress of in-service composite material components using X-rays. method of stress.
本发明的一种用X射线检测在役复合材料构件残余应力的方法是按以下步骤进行：A method for detecting the residual stress of an in-service composite material component with X-rays of the present invention is carried out according to the following steps:
一、将6～10段的金属丝按0.1～0.5mm间距平行粘贴于在役复合材料构件表面；1. Paste 6 to 10 sections of metal wire in parallel on the surface of the composite material component in service at a distance of 0.1 to 0.5 mm;
二、用X射线检测法检测步骤一中粘贴于在役复合材料构件表面的金属丝的残余应力，然后经计算，得出在役复合材料构件各部位的残余应力，即完成在役复合材料构件残余应力的检测。2. Use the X-ray detection method to detect the residual stress of the metal wire pasted on the surface of the composite material component in service in step 1, and then calculate the residual stress of each part of the composite material component in service, that is, complete the composite material component in service Detection of residual stress.
本发明包括以下有益效果：The present invention comprises following beneficial effect:
采用本发明测定在役复合材料构件的残余应力，既能保证不会对构件造成损伤，又能得到准确快捷的在役构件的残余应力大小，即该检测方法具有无损、可以检测在役构件、操作简便等优点。Using the present invention to measure the residual stress of in-service composite material components can not only ensure that the components will not be damaged, but also can obtain the accurate and quick residual stress of the in-service components, that is, the detection method is non-destructive, can detect in-service components, Easy operation and other advantages.
具体实施方式Detailed ways
具体实施方式一：本实施方式的一种用X射线检测在役复合材料构件残余应力的方法是按以下步骤进行：Embodiment 1: A method for detecting the residual stress of an in-service composite material member with X-rays in this embodiment is carried out in the following steps:
一、将6～10段的金属丝按0.1～0.5mm间距平行粘贴于在役复合材料构件表面；1. Paste 6 to 10 sections of metal wire in parallel on the surface of the composite material component in service at a distance of 0.1 to 0.5 mm;
二、用X射线检测法检测步骤一中粘贴于在役复合材料构件表面的金属丝的残余应力，然后经计算，得出在役复合材料构件各部位的残余应力，即完成在役复合材料构件残余应力的检测。2. Use the X-ray detection method to detect the residual stress of the metal wire pasted on the surface of the composite material component in service in step 1, and then calculate the residual stress of each part of the composite material component in service, that is, complete the composite material component in service Detection of residual stress.
本实施方式包括以下有益效果：This embodiment includes the following beneficial effects:
采用本实施方式测定在役复合材料构件的残余应力，既能保证不会对构件造成损伤，又能得到准确快捷的在役构件的残余应力大小，即该检测方法具有无损、可以检测在役构件、操作简便等优点。Using this embodiment to measure the residual stress of in-service composite material components can not only ensure that the components will not be damaged, but also obtain accurate and quick residual stress of in-service components, that is, the detection method is non-destructive and can detect in-service components. , Easy operation and so on.
具体实施方式二：本实施方式与具体实施方式一不同的是：步骤一中将8段的金属丝按0.2mm间距平行粘贴于在役复合材料构件表面。其它与具体实施方式一相同。Embodiment 2: This embodiment differs from Embodiment 1 in that in Step 1, 8 segments of metal wires are pasted in parallel on the surface of the in-service composite material member at a distance of 0.2 mm. Others are the same as in the first embodiment.
具体实施方式三：本实施方式与具体实施方式一或二不同的是：步骤一中金属丝为钢丝。其它与具体实施方式一或二相同。Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the metal wire in step 1 is a steel wire. Others are the same as in the first or second embodiment.
通过以下试验验证本发明的有益效果：Prove the beneficial effect of the present invention by following test:
试验一：本试验的一种用X射线检测在役复合材料构件残余应力的方法是按以下步骤进行：Test 1: A method of using X-rays to detect the residual stress of composite components in service in this test is carried out according to the following steps:
一、将8段的钢丝按0.2mm间距平行粘贴于在役复合材料构件表面；1. Paste 8 segments of steel wires in parallel on the surface of the in-service composite member at a distance of 0.2mm;
二、用X射线检测法检测步骤一中粘贴于在役复合材料构件表面的钢丝的残余应力，然后经计算，得出在役复合材料构件各部位的残余应力，即完成在役复合材料构件残余应力的检测。2. Use the X-ray detection method to detect the residual stress of the steel wire pasted on the surface of the composite material component in service in step 1, and then calculate the residual stress of each part of the composite material component in service, that is, complete the residual stress of the composite material component in service Stress detection.
采用本试验测定的在役复合材料构件的残余应力，既能保证不会对构件造成损伤，又能得到准确快捷的在役构件的残余应力大小，即该检测方法具有无损、可以检测在役构件、操作简便等优点。The residual stress of in-service composite components measured by this test can not only ensure that the components will not be damaged, but also can obtain the residual stress of in-service components accurately and quickly, that is, the detection method is nondestructive and can detect in-service components. , Easy operation and so on.
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Cited By (3)
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| CN106908177A (en) * | 2017-03-15 | 2017-06-30 | 哈尔滨工业大学 | A kind of device for measuring anisotropic material plane stress |
| CN108459343A (en) * | 2017-12-19 | 2018-08-28 | 成都飞机工业（集团）有限责任公司 | A kind of beam angle measurement method |
| CN113340503A (en) * | 2021-06-24 | 2021-09-03 | 武汉东海石化重型装备有限公司 | Material increase manufacturing method of pressure-bearing equipment convenient for stress sensing |
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Cited By (5)
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| CN106908177A (en) * | 2017-03-15 | 2017-06-30 | 哈尔滨工业大学 | A kind of device for measuring anisotropic material plane stress |
| CN108459343A (en) * | 2017-12-19 | 2018-08-28 | 成都飞机工业（集团）有限责任公司 | A kind of beam angle measurement method |
| CN108459343B (en) * | 2017-12-19 | 2021-11-30 | 成都飞机工业（集团）有限责任公司 | Ray bundle angle testing method |
| CN113340503A (en) * | 2021-06-24 | 2021-09-03 | 武汉东海石化重型装备有限公司 | Material increase manufacturing method of pressure-bearing equipment convenient for stress sensing |
| CN113340503B (en) * | 2021-06-24 | 2024-06-18 | 武汉东海石化重型装备有限公司 | Material increase manufacturing method for pressure equipment convenient for stress sensing |
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