Standard No.:	QC/T 637-2000
English Name:	Test method for endurance bending strength of automotive engines crank shaft
Chinese Name:	汽车发动机曲轴弯曲疲劳强度试验方法
Professional Classification:	QC    Professional Standard - Automobile
Issued by:	0
Issued on:	2000-1-19
Implemented on:	2000-7-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	4000 words
Price(USD):	100.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the test method for bench fatigue of bellcrank specimen of crankshaft for vehicle engine, data processing method and test precision requirements. This standard is applicable to the following situations: crankshaft fatigue strength evaluation test, new design, alteration of process or material, appraisal of goods supply, sampling inspection of product quality as well as other situations which may cause significant change on fatigue strength. 2 Normative References The following standard contains provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, all editions indicated are valid. All standards are subject to revision, and all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these standards apply. GB/T 10623-1989 Metallic Materials - Terms of Mechanical Test 3 Symbols, Terms and Definitions See Table 1 for the symbols, terms and definitions adopted in this standard, and see GB/T 10623 for terms related to fatigue test.

Foreword i 1 Scope 2 Normative References 3 Symbols, Terms and Definitions 4 Sampling 5 Test Apparatus 6 Test Method 7 Test Report 8 Original Record Annex A (Normative) Calculation for Nominal Working Bending Moment of Crankshaft Annex B (Normative) Calculation for Safety Fatigue Limit Annex C (Normative) Fitting Method for S-N Curve and P-S-N Curve