A method for correcting titanium alloy defect data
A data correction, titanium alloy technology, applied in special data processing applications, geometric CAD, design optimization/simulation, etc., can solve the problems of not meeting the airworthiness certification requirements of civil aircraft models, large data demand, long cycle, etc. Achieve the effects of ensuring safety and airworthiness, accurate defect distribution data, and shortening the cycle
Active Publication Date: 2020-11-24
BEIHANG UNIV
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] For data correction, if the correction is only made through the accumulation of data in the actual production process of the roulette, there will be disadvantages such as long cycle time, high cost and large data demand, especially for our country which cannot meet the urgent airworthiness certification of civil aircraft models at this stage need
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
[0055] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0056] The present invention starts from meeting the requirements of airworthiness, and corrects the defect distribution data of the titanium alloy wheel disk through simulation, such as figure 1 As shown, firstly, the defect distribution baseline of the ingot is obtained from the defect size of the initial ingot, and then different processing technologies are changed to obtain the defect distribution data of billets under different processing technologies and corrected: specifically, the defect distribution of ingots under different processes The curve is used as input data to calculate the probability failure risk of the roulette with internal hard α defects under different processes, and conduct comparative analysis.
[0057] Such as figure 2 As shown, the specific steps are as follows:
[0058] Step 1. Obtain the initial ingot defect size in the engine...
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 discloses a titanium alloy defect data correction method which belongs to the technical field of safety assessment. Specifically, for a certain aero-engine wheel disk, firstly, the initial casting block defect size in the engine wheel disk is obtained; combined with the POD curve obtained from the material nondestructive testing, the initial defect distribution curve of the castingsis obtained; then, DEFORM software is used to simulate and calculate the defect size of the ingot after machining; the initial defect distribution is obtained by combining the defect size and POD curve. By changing the different contact conditions and constraint conditions in the simulation, the defect distribution of the billet under different conditions is obtained, that is, the modification ofthe initial defect distribution of the casting block is obtained. The invention greatly shortens the accumulation period of defect distribution data, and has important engineering significance and practical value for supporting domestic civil engine probability risk assessment work and airworthiness certification requirements.
Description
technical field [0001] The invention belongs to the technical field of safety assessment, in particular to a method for correcting titanium alloy defect data. Background technique [0002] The defect distribution data is the key input data of the failure probability analysis of the aero-engine wheel, and it is a special and core data that directly affects the evaluation of the safety of the aero-engine. [0003] At present, the accumulation of defect distribution data of roulette in China is limited, and with the improvement of industrial level, the defect distribution also changes. The accumulation and correction of defect distribution data has an important impact on the safety of starting roulette. [0004] For data correction, if the correction is only made through the accumulation of data in the actual production process of the roulette, there will be disadvantages such as long cycle time, high cost and large data demand, especially for our country which cannot meet the ...
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): G06F30/15G06F30/20
CPCG06F30/15G06F30/20
Inventor 李果丁水汀张晓天刘晓静
Owner BEIHANG UNIV