Composite material patching and repairing method for aircraft landing gear beam cracks

The invention provides a composite material patching and repairing method for an aircraft landing gear beam crack, and belongs to the technical field of aircraft repairing. A magnetic attraction method is adopted, and the pressurization problem in the repairing process of undercarriage beam cracks in a semi-closed area is effectively solved; according to the stress condition and the working environment of the undercarriage beam, a material system for repairing the undercarriage beam crack is designed and developed, and the material system effectively reduces the expansion rate of the crack and meets the requirement of working in a kerosene environment; according to the device, magnetic attraction and hot air blowing are combined, and the requirements for heating and pressurizing of the crack repairing area in the aircraft fuel tank are met. 本发明提出一种飞机起落架梁裂纹的复合材料贴补修理方法，属于飞机修理技术领域。本发明采用磁力吸引的方法，有效解决了半封闭区域内起落架梁裂纹修理过程中的加压问题；根据起落架梁的受力情况和工作环境，设计开发起落架梁裂纹修理的材料体系，该材料体系有效降低了裂纹的扩展速率，满足在煤油环境中工作；本发明将磁力吸引和吹热空气进行了组合，实现了飞机油箱内部