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D4112-02 – Standard Test Method Technical Guide
📐 Scope and Referenced Standards
This performance specification, designated D4112-02 (Reapproved 2008), covers woven fabrics comprised of any textile fiber or mixture of fibers for use in umbrellas. The requirements apply to both length and width directions where fabric direction is pertinent. Users must establish appropriate safety and health practices and determine regulatory compliance.
Referenced Test Methods
The standard references numerous ASTM and AATCC test methods for evaluating fabric properties. These include methods for resistance to slippage, tearing strength, breaking strength, colorfastness to various agents, and water resistance.
| 🟦 Test Method | 📏 Description |
|---|---|
| ASTM D123 | Terminology Relating to Textiles |
| ASTM D434 | Resistance to Slippage of Yarns in Woven Fabrics |
| ASTM D1424 | Tearing Strength by Falling-Pendulum Apparatus |
| ASTM D5034 | Breaking Strength and Elongation (Grab Test) |
| AATCC 8 | Colorfastness to Crocking: Crockmeter Method |
| AATCC 16 | Colorfastness to Light |
| AATCC 22 | Water Repellency: Spray Test |
| AATCC 35 | Water Resistance: Rain Test |
⚙️ Test Methods and Specifications
The test methods cited in this standard are used to determine compliance with performance requirements. For example, tearing strength is assessed using ASTM D1424 or ASTM D2261. Colorfastness is evaluated through AATCC methods for crocking, light, gases, and ozone. The standard also references federal and military standards for sampling and flammability.
Important: Many of the referenced ASTM standards have been withdrawn or updated. Users should refer to the latest approved versions. For instance, ASTM D434 was withdrawn in 2003.
| ⚡ Standard | 📐 Requirement |
|---|---|
| 16 CFR, Chapter II | Flammable Fabrics Act Regulations |
| MIL-STD-105D | Sampling Procedures for Inspection by Attributes |
📊 Key Measured Properties
Properties measured according to this specification include yarn slippage resistance, tearing strength, breaking strength, elongation, and various colorfastness attributes. The standard does not prescribe specific numerical limits; instead, compliance is based on agreement between the purchaser and the supplier using the referenced test methods.
Tip: Always verify the current editions of the referenced standards, as they may have been revised since the publication of D4112-02.
❓ Frequently Asked Questions
🔍 What is the purpose of ASTM D4112-02?
It provides a performance specification for woven umbrella fabrics, ensuring quality through standardized testing.
💡 What fiber types are covered?
The specification applies to fabrics of any textile fiber or mixture of fibers.
⚡ Does the standard include numerical requirements?
No, it relies on referenced test methods and user-specified performance levels.
📌 What is the reapproval status?
The standard was originally approved in 1982 and last reapproved in 2008.