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BS ISO 12111:2011

BS ISO 12111:2011

$167.15

Metallic materials. Fatigue testing. Strain-controlled thermomechanical fatigue testing method

Published By Publication Date Number of Pages
BSI 2011 36
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This International Standard is applicable to the TMF testing of uniaxially loaded metallic specimens under strain control. Specifications allow for any constant cyclic amplitude of mechanical strain and temperature with any constant cyclic mechanical strain ratio and any constant cyclic temperature-mechanical strain phasing.

NOTE A list and sketch of the most common cyclic types is shown in Annex A.

The range of cycles considered corresponds to that which is generally considered as the low-cycle fatigue domain, that is, Nf ā‰¤ 105.

PDF Catalog

PDF Pages PDF Title
9 Scope
Normative references
Terms and definitions
11 Symbols
12 Apparatus
Testing machine
General
Force measuring system
Specimen gripping device
Load train alignment
13 Strain measuring system
Heating system
Instrumentation for test monitoring
14 Checking and verification of the apparatus
Specimens
Geometry
General
Solid round specimens
17 Round tubular specimens
Solid rectangular specimens
Preparation of specimens
18 Machining procedure
General
Alteration in the microstructure of the material
Introduction of contaminants
Sampling and marking
19 Surface condition of the specimen
Dimensional check
Storage and handling of specimens
20 Procedure
Laboratory environment
Specimen mounting
Temperature control
Temperature gradients
21 Mechanical strain control
Thermal strain compensation
General
Compensation methods
Overview
22 MethodĀ 1
Method 2
Summary
Compensation accuracy
23 Temperature/mechanical strain phasing
24 Command waveforms
Start of test
25 Preliminary measurements
Modulus check
Thermal expansion
Commencement of TMF mechanical straining
Monitoring the test
Failure criteria
Specimen separation
Tensile force drop
Specimen cracking
26 Failure
Test interruption sequence
Expression of results
Preliminary data
Reduction of recorded data
Analysis of results
Determination of TMF life
Strain-life relationship
27 Test report
Aim of the study
Material
Specimen
Test equipment details
Description of test methodology
Test termination technique including definition of failure
Deviations from specified test tolerances or recommended pro
28 Test conditions
Presentation of results
Presentation of single test results
Presentation of results of test series

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BS ISO 12111:2011
$167.15