The AACHEN test is designed to measure how carpet tiles respond to heat and moisture—two environmental factors that can cause dimensional changes like expansion, contraction, curling, or buckling. The goal is to simulate real-world conditions and quantify how much the tiles shift from their original form.
This test is especially important in environments with fluctuating temperatures or humidity, such as schools, offices, airports, and healthcare facilities, where product failure can lead to costly replacements or safety hazards.
How the AACHEN Test Is Performed
The AACHEN test method involves a series of carefully controlled steps that simulate stress and recovery:
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Initial Measurement
Carpet tile specimens are measured for length and width before testing begins. These baseline dimensions are recorded as reference points.
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Heat Exposure Phase
The specimens are placed in a controlled heat environment for a defined period to simulate exposure to elevated temperatures.
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Post-Heat Measurement
After the heat cycle, the tiles are re-measured to determine any changes in size. These measurements are compared to the original dimensions to assess shrinkage or expansion.
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Moisture Exposure Phase
Next, the tiles are subjected to moisture or water exposure under controlled conditions, mimicking high-humidity or wet environments.
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Post-Water Measurement
Once the moisture exposure is complete, the carpet tiles are again measured to assess dimensional changes caused by water absorption.
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Drying and Heat Recovery Phase
The samples are returned to a dry, heated environment to simulate a drying or recovery process, much like what happens when floors are heated or when the ambient climate stabilizes.
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Final Measurement
After drying, a final set of measurements is taken. All dimensional changes—shrinkage, expansion, warping—are documented in both inches and percentage change from the original size.
This test sequence helps determine whether a carpet tile can maintain its structural integrity and appearance across a range of challenging conditions.
Why Dimensional Stability Matters
Carpet tiles that deform after installation can lead to visible gaps, uneven surfaces, and long-term durability issues. Dimensional stability testing using the AACHEN method is critical for:
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✅ Manufacturers who need to validate their product’s performance before going to market
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✅ Specifiers and architects choosing flooring materials for climate-variable spaces
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✅ Facility managers who want to reduce maintenance and replacement costs over time
With standardized data from an accredited testing lab, decision-makers can confidently choose carpet tile products that deliver both form and function.
Partner with Professional Testing Laboratory for Carpet Tile Performance Testing
At Professional Testing Laboratory, we specialize in dimensional stability testing for carpet tiles, including procedures based on the AACHEN method. Our lab is equipped to simulate real-world conditions, measure critical changes in tile dimensions, and provide detailed performance reports that support product development and compliance.
We work with manufacturers, designers, and purchasing teams to ensure flooring materials meet high expectations for resilience and longevity.
Ensure Your Carpet Tiles Are Ready for the Real World
If you're launching a new carpet tile product or validating an existing line, let us help you ensure it's built to last. With decades of experience and ISO/IEC 17025-accredited testing services, Professional Testing Laboratory is your trusted partner in performance testing.
📞 Contact us today to schedule dimensional stability testing or request a custom quote.
