Method for testing mechanical property of thin-wall region of diesel engine block
A testing method and diesel engine technology, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, scientific instruments, etc., can solve the problem that the mechanical properties of the narrow and thin-walled area of the diesel engine body cannot be tested, etc.
Inactive Publication Date: 2017-02-22
CHINA NORTH ENGINE INST TIANJIN
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[0004] In view of this, the present invention aims to propose a method for testing the mechanical properties of the thin-walled area of the diesel engine body, which solves the problem that the mechanical properties of the narrow thin-walled area of the diesel engine body cannot be tested
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[0025] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0026] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0027] The method for testing the mechanical properties of the thin-walled area of the diesel engine body of the present invention includes the following contents:
[0028] Take standard samples and non-standard small samples in the partition area of the body, such as figure 2 As shown, this embodiment chooses to take standard samples in the partition area of the body, because the partition area has a large space and relatively stable mechanical properties; Determination;
[0029] Bring the measured values of the mechanical properties of the above-mentioned standard samples and non-standard tiny samples into formula (2), and obtain the comprehensive influence factor k in formu...
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Abstract
The invention provides a method for testing the mechanical property of a thin-wall region of a diesel engine block. The method includes the following steps that 1, a standard sample and a non-standard microsample are taken from the region which is stable in engine body performance and has enough sampling space to measure the mechanical property; 2, the mechanical property statistics relation between the standard sample and the non-standard microsample is set up, and the obtained measurement value of the mechanical property is substituted into the relation formula to solve a comprehensive influence factor value; 3, a non-standard microsample is taken from the thin-wall region of the engine body to measure the mechanical property of the non-standard microsample in the thin-wall region; 4, the measurement value of the mechanical property of the non-standard microsample in the thin-wall region is multiplied with the obtained comprehensive influence factor value to calculate the mechanical property value of the thin-wall region. The concept of non-standard microsample is introduced, the diesel engine block sampling and partitioned mechanical property testing method is formed, and the problem that the mechanical property of the narrow thin-wall region of the diesel engine block cannot be tested is solved.
Description
technical field [0001] The invention belongs to the technical field of testing the mechanical properties of diesel engine bodies, in particular to a method for testing the mechanical properties of thin-walled areas of diesel engine bodies. Background technique [0002] The body is the largest and most complex part of the diesel engine structure. It is the skeleton of the whole diesel engine, and the force in the working process is also very complicated. The strength and stiffness of each part of the body should be fully considered in the design process of the diesel engine body. , while the stiffness calculation needs to provide accurate material performance boundaries. Due to the complex structure of the body, the inhomogeneity of casting and heat treatment, there is a great dispersion in the anatomical mechanical properties of different parts, and the mechanical properties are significantly reduced in some areas where the wall thickness is thinner. In the relevant standar...
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IPC IPC(8): G01N3/08
CPCG01N3/08G01N2203/0017G01N2203/0019
Inventor 刁占英陈泽忠景国玺孙亚奇文洋李鹏
Owner CHINA NORTH ENGINE INST TIANJIN