MaTestLab > Test Standards > ASTM D3039 Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials
Last updated 22nd October 2025
ASTM D3039 Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials
ASTM D3039 is a standard tensile testing method for evaluating the in-plane tensile properties of polymer matrix composite materials reinforced by high-modulus fibers. It utilizes stress-strain diagrams to determine the tensile modulus, which is crucial for material specification, component design, and quality control. This standard is primarily relevant to composite materials featuring continuous or discontinuous fiber reinforcement, typically exhibiting balanced and symmetric laminate configurations.
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ASTM D3039 Introduction
ASTM D3039 is meticulously crafted to provide accurate and reliable measurements of the material’s response to tensile forces, particularly in scenarios where the composite material is reinforced with fibers known for their high modulus, or stiffness. ASTM D3039 commonly utilizes a stress-strain diagram to determine the tensile modulus. The data obtained from this diagram is crucial for material specification, designing components to withstand applied forces, and quality control checks. ASTM D3039 is applicable primarily to composite materials with continuous or discontinuous fiber reinforcement, typically featuring balanced and symmetric laminate configurations.
ASTM D3039 Test Method
Test Speed Assessment
The testing speed of the material can be determined either by the material specification or by the time to failure, typically ranging from 1 to 10 minutes. A common test speed for standard samples is 2 mm/min (0.05 in/min).
Elongation and Tensile Modulus Assessment
To evaluate elongation and tensile modulus, an extensometer or strain gauge is employed.
Elevated or Reduced Temperature Test
The Universal Test Machine includes a thermal chamber for controlled testing under varying temperatures. It accommodates standard measurement devices and employs internal electric heaters for heating and external carbon dioxide for cooling.
ASTM D3039 Equipment and Sample Preparation
Specimen Details
ASTM D3039 is a standardized tensile testing method specifically designed to evaluate the in-plane tensile properties of polymer matrix composite materials reinforced by high-modulus fibers.
Specimen Size
The samples for ASTM D3039 feature a constant rectangular cross-section measuring 25 mm (1 inch) wide and 250 mm (10 inches) in length.
ASTM D3039 Test Results and Interpretation
ASTM D3039 tests provide the tensile properties of polymer matrix composite materials, such as tensile strength, tensile modulus, strain at break, and Poisson’s ratio. These are essential in determining the behavior of a composite material under uniaxial tensile loading. High tensile strength describes the material’s resistance to breaking under tension, while tensile modulus describes stiffness. Strain at break describes the ductility or brittleness of material. The interpretation of these findings assists engineers in choosing suitable composite materials for structural uses, comparing performance between different fiber/resin systems, and meeting mechanical specifications in different engineering designs. It is a standard test method for tensile testing, utilized to measure both the force needed to fracture a polymer composite specimen and the degree of elongation it undergoes until reaching the breaking point.
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ASTM D3039 Testing
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Tests related to ASTM D3039
ASTM D3039 is related to tests including ASTM D792 for measuring the density and specific gravity of plastics, ASTM D2584 for measuring ignition loss in resins, and ASTM D2734 for measuring plastics’ void content. ASTM D3518 for in-plane shear response and ASTM D2344 for interlaminar shear strength.
Use of ASTM D3039 in Various Industries
It has become a widely accepted standard for evaluating the tensile properties of polymer matrix composites in aerospace, automotive, construction, and renewable energy applications, ensuring the durability of aircraft components. Data obtained from this testing method informs the composite selection, structural design, and certification processes required by agencies such as the FAA and NASA. It also helps in comparing different fiber-matrix combinations during material development.
Materials Commonly Tested with ASTM D3039
It tests materials such as CFRPs, GFRPs, and hybrid composites for high-performance applications with strength-to-weight ratios. The method ensures industry compliance and verifies material performance subjected to tensile stress while complying with new material formulations. The versatility of the standard allows it to be adapted to hybrid composites and innovative material systems, ensuring relevance in modern composite technology.
Common Challenges and Troubleshooting in ASTM D3039 Testing
Testing suffers from sample misalignment, uneven gripping, and material slippage, among other issues, which cause inaccurate results. Troubleshooting involves precise specimen alignment, appropriate grip surfaces, stress reduction, and consistent environmental conditions to reduce variability. To minimize such issues, testing machines should be periodically calibrated, alignment verified, and grips maintained in proper condition. High-quality machining tools and precise tab bonding techniques help ensure sample integrity.
Safety and Best Practices in ASTM D3039 Testing
Testing requires safe handling of specimens, adherence to the equipment’s guidelines, wearing PPE, calibration, pre-testing alignment checks, and avoiding overstressing to ensure accurate and safe testing. Proper ventilation and dust removal are recommended during sample preparation to prevent inhalation of aggregate particles. Following these practices ensures both operator safety and data reliability.
Importance of ASTM D3039
The standard is significant for quality assurance, material development, and regulatory compliance in polymer matrix composite industries. It affords standardized tensile property data; it enables an engineer to select appropriate material, hence supporting research, innovation, and development within composite material technologies.
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Please contact us for a detailed quote for your astm d3039 testing needs. Cost incurred to carry out different astm d3039 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.
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The required number of samples or specimens should comply with the procedure given in the astm d3039 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
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How many days will it take to complete the astm d3039 test?
The turnaround time for astm d3039 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 d3039 tested?
You can share your astm d3039 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 d3039 test to various testing techniques.
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