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D6207-03 – Standard Test Method Technical Guide
ASTM D6207-03 (Reapproved 2019) specifies a test method for evaluating the dimensional stability of fabrics exposed to cyclic changes in humidity and temperature, particularly for panel and screen systems such as acoustic panels and office partitions. The method collects data on dimensional change, including growth and shrinkage, under controlled conditions.
📐 Scope and Significance
This test method applies to fabrics used in panel and screen systems. It determines dimensional stability by cycling specimens through specified relative humidity and temperature environments. The standard emphasizes that SI units are standard, and parenthetical values are for reference only.
The significance lies in assessing whether a fabric will maintain its shape and resist bubbling or sagging over time. It is recommended for acceptance testing of commercial shipments, but caution is advised due to incomplete between-laboratory precision data. Comparative tests should be conducted if significant differences arise between laboratories, as outlined in section 5.2.1.
⚙️ Test Procedure and Referenced Standards
The test involves measuring dimensional changes from bench marks on fabric specimens subjected to controlled cycles. The procedure relies on definitions from D4850 and D123, and incorporates supplementary test methods from D5034 and D5035 for breaking strength and elongation.
Key terms include bench mark, dimensional change, and dimensional stability, as defined in the referenced terminologies.
| 🟦 Standard | 📏 Title |
|---|---|
| D123 | Terminology Relating to Textiles |
| D4850 | Terminology Relating to Fabrics and Fabric Test Methods |
| D5034 | Test Method for Breaking Strength and Elongation of Textile Fabrics (Grab Test) |
| D5035 | Test Method for Breaking Force and Elongation of Textile Fabrics (Strip Method) |
| 📐 Term | 📄 Source |
|---|---|
| Bench Mark | D4850 |
| Dimensional Change | D4850 |
| Dimensional Stability | D4850 |
⚠️ Caution: Between-laboratory precision data for this test method is incomplete. It is advisable to perform comparative tests as per section 5.2.1 when discrepancies occur.
🔧 Tip: Always use SI units as the standard for measurements, as specified in the standard, to ensure consistency and compliance.
❓ Frequently Asked Questions
🔍 What is the scope of ASTM D6207-03?
The test method covers dimensional stability of fabrics used in panel and screen systems when subjected to cyclic humidity and temperature changes.
💡 Why is dimensional stability important for fabrics?
It helps determine if a fabric will retain its shape and not bubble or sag over time, ensuring suitability for use on substrates.
⚡ What units are considered standard in this test method?
Values stated in SI units are regarded as standard; values in parentheses are for information only.
📌 How should comparative testing be conducted between laboratories?
Use homogeneous samples from the same lot, assign them randomly to laboratories, and perform statistical tests to identify biases.