Residual stress detection

Where to go for residual stress testing? BAIJIAN material testing agency can provide residual stress testing services. It is a CMA qualification certification agency and a high-tech enterprise. It has a formal material testing laboratory, complete testing instruments, and a strong scientific research team, 7-15 Test reports can be issued on working days, and the QR code system can be scanned to check the authenticity. It supports nationwide door-to-door sampling and sample delivery testing services. The testing cycle is short, the testing cost is low, and the testing data is scientific and accurate!

Testing cycle: 7-15 working days

Testing fee span>: Initial inspection samples. After the initial inspection, quotations will be made based on the customer's testing needs and the complexity of the experiment.

Residual stress detection range

Rails, axles, tantalum wires, welded pipes, expansion pipes, casings, oil pipes, TiALN coatings, granular structures, steel structures, mechanical equipment, pipes, Welding, film, aluminum plate, aluminum alloy, parts, components, etc.

Residual stress detection items

Residual stress detection, welding residual stress detection, drilling residual stress detection, X-ray residual stress detection, non-destructive residual stress detection, xrd residual stress detection, Ultrasonic residual stress detection, etc.

Introduction to residual stress detection methods

Residual stress refers to the internal stress that exists in an object without causing deformation or deformation. These stresses may be caused by a variety of factors, such as material processing, temperature changes, chemical reactions, mechanical loading, etc. In order to determine the size and distribution of these residual stresses, residual stress detection is required. Commonly used residual stress detection methods are as follows:

1. X-ray diffraction (XRD): This method determines the size and distribution of stress within an object by analyzing the shape and position of the diffraction peak. This method is suitable for most metallic materials and some non-metallic materials.

2. Neutron diffraction: Similar to XRD, neutron diffraction also measures residual stress by analyzing the shape and position of the diffraction peak. This method is suitable for most metallic and non-metallic materials.

3. Reflection method: The reflection method is used to detect the residual stress in the material. By selecting different incident angles and wavelengths, different residual stress values ​​can be obtained.

4. Indentation method: Create a small dimple on the surface of the material, and then measure the displacement and residual internal stress on the surface. This method is suitable for residual stress detection of small amounts of materials.

5. Tensile method: without damaging the material, perform a tensile test on the material and measure the deformation of the material. By calculating the deformation and stress values, the residual stress inside the material can be evaluated.

6. Grating method: The phase difference of the grating is used to detect the residual stress inside the material. through gratingAnd instruments such as fluorescent screens can obtain the residual stress distribution of materials.

What are the functions of the BAIJIAN test report? What problems can it help you solve?

1. Sales use. (Sell your own products and issue third-party testing reports to make customers more confident in the quality of your products and give your products a certain advantage in sales)

2. Research and development use. (During the research and development process, some difficult problems are encountered, and the problems are solved through test report data, thereby shortening the research and development cycle and reducing research and development costs)

3. Improve product quality. (By comparing test data, we can discover the problems of our own products, improve product quality, and reduce production costs)

4. Use of scientific research paper data.

5. Bidding and bidding (BAIJIAN has a relatively short testing cycle, low testing costs, and high recognition, and is especially suitable for bidding)

Residual stress testing standard

GB/T 10567.1-1997 Residual stress testing method for copper and copper alloy processed materials Mercury nitrate test method

GB/T 10567.2-2007 Residual stress test method for copper and copper alloy processed materials Ammonia fumigation test method

GB/T 24179-2009 Indentation strain method for determination of residual stress in metallic materials

GB/T 26078 -2010 Explosion treatment method for residual stress in welding of metallic materials

GB/T 26140-2010 Neutron diffraction method for measuring residual stress in non-destructive testing

GB/T 31218-2014 Residual stress in metallic materials Determination of full release strain method

GB/T 31310-2014 Drilling strain method for determination of residual stress in metal materials

GB/T 32073-2015 Non-destructive detection of residual stress Ultrasonic critical refraction longitudinal wave detection method

GB/T 33163-2016 Ultrasonic impact treatment method for residual stress in metallic materials

GB/T 33210-2016 Electromagnetic detection method for non-destructive testing of residual stress

GOST 11603-1973 Method for determination of residual stress in wood

ISO 196-1978 Detection of residual stress in wrought copper and copper alloys Mercury nitrate test

JB/T 12615-2016 Carbide cutting tools Residual stress detection method

AS 2888.9-2002 Test methods for plastic sewage equipment Part 9: Residual stress in plastic sewage equipment

ASTM C978-2004(2014) Using polarizing microscopes and optics Determination of transparent glass using retardation compensation methodTest Method for Residual Stress in Matrix

ASTM D7474-2012 Practice for Determination of Residual Stress in Extruded or Molded Sulfone Plastic Parts by Immersion in Various Chemical Reagents

ASTM E837-2008e1 Used Test Method for Residual Stress Determination by Borehole Strain Gauge Method

ASTM E915-2010 Test Method for Verifying the Alignment of X-Ray Diffractometers for Residual Stress Measurement

ASTM E1426-2014 For Method for determination of effective elastic parameters for measuring residual stress by Standard test method for measuring residual stresses in bearing steels by X-ray diffraction

BS EN ISO 196-1995 Wrought copper and copper alloys. Determination of residual stresses. Mercury(I) nitrate test

BS EN 13147-2001 Determination of residual stress on wide surfaces of copper and copper alloy strips

CB/T 3395-2013 Residual stress test method Drilling strain relief method

DIN EN ISO 196-1995 Wrought copper and copper-gold. Residual stress testing. Mercury nitrate test

DIN EN 13147-2001 Copper and copper alloys. Determination of residual stress in edge areas of copper strips

DIN SPEC 1095-2009 Standard test method for residual stress determination by neutron diffraction for non-destructive testing

What are the advantages of BAIJIAN testing? Why choose BAIJIAN?

1. BAIJIAN is collectively owned testing facility.

2. Initial inspection samples.

3. Multiple laboratory branches across the country support door-to-door sampling/send sample testing.

4. The testing cycle is short, the testing cost is low, and the experimental plan is complete.

5. Complete qualifications, complete laboratory equipment, and a strong scientific research team.

6. Support MSDS writing service in 36 languages

BAIJIAN sample sending and testing process

1. Sample sending

2. Initial inspection Sample

3. Quotation

4. Both parties confirm, sign a confidentiality agreement, and start the experiment

5. Complete the experiment in 7-15 working days

6. Issue test reports and provide follow-up services.

The above is the relevant introduction to residual stress testing. If you have other testing needs, you can consult the laboratory engineer to help you answer them.