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Intensity check method of vehicle bonding structure in full temperature field environment

A technology with structural strength and full temperature, which is applied in the testing of machines/structural components, measuring devices, instruments, etc., and can solve the problems that mechanical connection technology cannot fully meet the needs

Pending Publication Date: 2019-07-05
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the increasing application of new materials such as aluminum alloy, high-strength steel and composite materials in the automotive industry, and the continuous development of multi-material hybrid design concepts in the automotive industry, traditional mechanical connection technologies (such as welding, riveting, etc.) etc.) can no longer fully meet the needs

Method used

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  • Intensity check method of vehicle bonding structure in full temperature field environment
  • Intensity check method of vehicle bonding structure in full temperature field environment
  • Intensity check method of vehicle bonding structure in full temperature field environment

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Embodiment Construction

[0016] Concrete embodiment of the present invention and process are as follows:

[0017] 1. Selection of adhesive and bonding substrate.

[0018] The adhesive selected in the experiment is a modified silane polyurethane adhesive ISR-7008 (produced by Bostik China Co., Ltd.), which is widely used in the bonding of cars, trucks and train windows. Parameters, as shown in Table 2.1. The operating temperature range provided in the technical manual is -40°C-90°C. Forms a permanent elastomer by reacting with water in the air. The bonding base material is 6005A aluminum alloy, which is widely used in automobile body structures.

[0019] Table 1 Select the mechanical parameters and properties of bonding materials

[0020]

[0021] 2. Design and processing of bonded specimens and force analysis of bonded surfaces.

[0022] Butt joint and lap joint specimens are designed to study the mechanical properties of bonded joints under tensile stress state and shear stress state, respect...

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Abstract

The invention discloses an intensity check method of a vehicle bonding structure in a full temperature field environment. The method is characterized in that the conclusion is as follows that(1) the influence law of the environment temperature on the mechanical properties of an ISR-7008 adhesive main body shows that along with the rise of temperature, the Young modulus, the tensile strength and the failure strain of the adhesives are all on a declining curve; and (2) the test on seven different groups of temperature points on a lap joint, an inlay joint and a butt joint shows that the failurestrength of the joints gradually decreases along with the rise of the temperature, the failure strength of the joints gradually increases along with the fall of the temperature, the rigidity of the joints gradually decreases when the temperature raises from the normal temperature 25 DEG C to 80 DEG C, and the rigidity of the joints gradually increases when the temperature falls from the normal temperature 25 DEG C to -40 DEG C. The intensity check method disclosed by the invention has the advantages that the study of the performance change law of the bonded joint at different temperatures is of great significance in guiding the design of the bonding structure.

Description

technical field [0001] The invention relates to the field of vehicle bonding structures, in particular to a method for checking the strength of vehicle bonding structures in a full temperature field environment. Background technique [0002] In recent years, with the increasing application of new materials such as aluminum alloy, high-strength steel and composite materials in the automotive industry, and the continuous development of multi-material hybrid design concepts in the automotive industry, traditional mechanical connection technologies (such as welding, riveting, etc.) etc.) can no longer fully meet the demand. The bonding technology can effectively realize the connection of dissimilar materials. At the same time, it has the advantages of uniform stress distribution, good fatigue performance, and good lightweight effect. Compared with other connection technologies, it is more suitable for the connection of new materials for automobile structures, and has received mo...

Claims

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Application Information

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IPC IPC(8): G01N19/04G01M13/00
CPCG01M13/00G01N19/04
Inventor 范以撒段俊法上官林建郭朋彦张华伟曹斌彭晗古冬冬周甲伟刘继高
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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