Composites Testing & Analysis

Composites Testing & Analysis

A composite’s performance often depends on the quality of its internal structure and interfaces. Voids, areas with insufficient resin, incomplete curing, or weak fiber-matrix bonding can reduce strength even when the fibers themselves remain intact, and these issues are often hidden inside the laminate.MatX Lab analyses composites to assess mechanical properties, identify internal defects and porosity, measure fiber content, evaluate cure condition, and investigate the causes of delamination or failure. Our testing looks at both the surface and the internal structure to understand where and why composite materials fail.

What We Analyze in Composites

Composite testing looks at how the material performs, what is happening inside the laminate, and why failures occur. We check laminate strength, identify issues like voids and delamination, measure fiber and resin content, and examine interface problems between the materials. The same analysis used to check a composite part can also help find the reason behind a failure.

• Tensile, flexural, compression, and interlaminar shear strength.
• Internal porosity, voids, and delamination.
• Fiber volume fraction and resin content.
• Cure state and glass transition.
• Fiber-matrix interface quality.
• Delamination, disbond, and fracture mechanisms.

How We Test Composites

Composite work usually combines mechanical testing with internal inspection, and we scope the combination your question needs. The methods below are the ones we reach for most, and each links to its own page.

Mechanical Testing:

Tests tensile, flexural, compression, and interlaminar shear strength to see how the laminate behaves under real loading conditions. The results show how the material performs against the required specification and where it starts to lose strength.

3D Characterization.

X-ray CT is used to examine the inside of composite parts and identify issues such as voids, porosity, delamination, and fiber arrangement without damaging the sample. It helps in revealing of defects that may not be visible through surface checks or physical sectioning.

Imaging & Microscopy:

Examines composite cross-sections to check fiber distribution, matrix condition, voids, and the quality of the fiber-matrix interface. Fracture surface analysis also helps show how and where the laminate failed.

Thermal Analysis:

Measures glass transition, cure state, and resin content by DSC and TGA. It confirms the matrix was fully cured and correctly formulated.

Physical & Rheological Properties:

Measures density and fiber volume fraction, the constituents that drive stiffness and strength.

Failure Analysis:

Determines whether a composite failed by delamination, fiber breakage, matrix cracking, or disbond, and reports the root cause with supporting evidence.

Industries That Rely on Composites Testing

Composite testing runs across the sectors that build lightweight structural parts, where an internal defect can carry the same risk as a visible crack.

Aerospace · Automotive · Energy · Advanced Materials · Manufacturing

Standards & Test Methods

The Composite testing follows the requirements defined by your specifications. Where a recognized standard applies, we use that method and reference it in the report. The testing approach is documented clearly to ensure the results are traceable and consistent with your requirements.