A four-point bending test method for a composite frame structure
A four-point bending, composite material technology, applied in the field of aircraft composite material testing, can solve the problems of lack of composite material structure design, analysis, manufacturing and verification methods, and lack of experience in the application of composite materials for aircraft main bearing structures, to improve The effect of aircraft performance, reducing operation and maintenance costs, and improving economic benefits
Active Publication Date: 2019-08-23
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
View PDF3 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] More than 90% of the ARJ21 and some aircraft structures currently in service in China are made of aluminum alloy, and the amount of composite materials is very small, and they are all used in the secondary load-bearing structures. There is no experience in applying composite materials to the main load-bearing structures of aircraft. Lack of methods for design, analysis, manufacture and verification of composite structures
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0047] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail b...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a composite material bulkhead structure four-point bending test method. The method is used for researching influences of different bulkhead structure forms and different long stringer rat hole shapes on stress and strain distribution and bearing capacity of bulkhead structures, assessing the BVID damage bearing capacity of the structures, and verifying residual intensity of the structures. The composite material bulkhead structure four-point bending test method includes the steps that firstly, a test piece is obtained; secondly, a loading scheme is designed; thirdly, a loading test is conducted. The composite material bulkhead structure four-point bending test method can provide technical support for research of researched and in-service civil airplane body composite material bulkhead structures in China, reduce the structural weight, improve airplane properties, reduce application and maintenance cost and improve economic benefits.
Description
technical field [0001] The invention belongs to the technical field of aircraft composite material testing, and in particular relates to a four-point bending test method of a composite material bulkhead structure. Background technique [0002] As we all know, in aircraft design, composite materials are more and more widely used in aircraft structures due to their excellent properties such as high specific stiffness / specific strength, corrosion resistance, and fatigue resistance. Composite materials can effectively reduce the weight of the aircraft structure and increase the commercial load of the aircraft; or increase the amount of fuel and increase the range of the aircraft. On the other hand, the application of composite materials can reduce the number of aircraft structural inspections, increase inspection intervals, and reduce aircraft maintenance costs, thereby fundamentally improving the economic benefits of civil aircraft throughout their service life. [0003] For f...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/20G01N3/04
Inventor 王瑜胡海阳王振世刘利阳
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA