MaTestLab > Test Standards > ASTM E289 Standard Test Method for Linear Thermal Expansion of Rigid Solids with Interferometry
Last updated 17th March 2025
ASTM E289 Standard Test Method for Linear Thermal Expansion of Rigid Solids with Interferometry
The linear thermal expansion of rigid materials is determined using a Michelson or Fizeau interferometer, according to ASTM E289 guidelines. To ensure reliable thermal length change measurements, a rigid solid, as defined above, displays negligible creep at the temperature of the test and under the loads created by the instruments. ASTM E289 recognizes that to properly evaluate the linear thermal expansion performance of different rigid solids and meet the needs of their unique material applications, precise preconditioning and particular thermal test regimes are required.
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ASTM E289 Introduction
In order to solve thermal stress issues in solid artifacts made of various materials, ASTM E289 assists in determining thermal expansion coefficients that are essential for design. It provides crucial direction on specimen setup, design, and methods for precise thermal expansion measurements. With the greatest network of testing labs in the USA to perform ASTM E289 tests for our clients, MaTestLab is among the top testing service providers. It is adaptable and meets the needs of quality control, specifications, research and development, and accurate thermal measurements.
ASTM E289 Test Method
Monochromatic Illumination of the Specimen
A specimen is positioned by ASTM E289 in between polished reflective ends or mirrors. These mirrors have surfaces coated in a high-reflectance metal, such as gold, and are composed of uniform sapphire or silica. To produce a fringe pattern, both surfaces are simultaneously lit by a monochromatic light source or a parallel laser beam.
Detecting Changes in Fringe Pattern
The specimen’s expansion or contraction during heating or cooling modifies the length of the optical path between the reflecting surfaces, which in turn modifies the fringe pattern. It is possible to determine expansion and the expansion coefficient by detecting this alteration and translating it into a change in length.
ASTM E289 Equipment and Sample Preparation
Specimen Detail
The linear thermal expansion of rigid solids is determined using ASTM E289 standards.
Specimen Size
The cylindrical specimen has a consistent diameter of 61m rad and hemispherical ends with a radius of curvature equal to or less than 3mm.
ASTM E289 Test Result and Interpretation
To sum up, ASTM E289 offers a trustworthy method for figuring out rigid materials’ linear thermal expansion, which is crucial for a variety of engineering applications. Engineers are able to comprehend how materials behave under temperature changes and use this knowledge to design and evaluate the performance of systems and structural components by monitoring thermal expansion correctly.
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ASTM E289
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Tests Related to ASTM E289
ASTM E289 is related to tests, including ASTM D696 for testing the coefficient of linear expansion of plastics, ASTM E220 for thermocouple calibration, and ASTM E228 for measuring the linear thermal expansion of solids.
Use of ASTM E289 in Various Industries
The standard is useful in the aerospace, electronics, automotive, and construction industries, mainly for selecting materials to control extreme temperature fluctuation, maintain dimensional stability, and evaluate materials in temperature-sensitive environments.
Materials Commonly Tested with ASTM E289
It is used for the measurement of linear thermal expansion coefficients of rigid solids such as metals, ceramics, glass, and advanced composites. The method is thus useful for novel materials intended for special applications.
Importance of ASTM E289
The method is important for material reliability and performance in temperature variations applications. It provides accurate measurements of linear thermal expansion, helps in design optimization, and prevents failures due to thermal stress, thus improving the material selection process.
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FAQ's
Where can I get the astm e289 tested?
You can share your astm e289 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm e289 test to various testing techniques.
How much do I need to pay for the astm e289 test?
Please contact us for a detailed quote for your astm e289 testing needs. Cost incurred to carry out different astm e289 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.
How many samples are required for astm e289?
The required number of samples or specimens should comply with the procedure given in the astm e289 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
How much discount can I get on the astm e289 test?
MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.
How many days will it take to complete the astm e289 test?
The turnaround time for astm e289 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.
Where can I get the astm e289 tested?
You can share your astm e289 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm e289 test to various testing techniques.
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