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snbbing and capstan tensile test fixture

snbbing and capstan tensile test fixture

ISO 3341, ASTM D2256; yarn, thin wire

Snubbing and Capstan grips are all engineered to perform high strength tensile tests where the test samples are long compared to their cross-sectional area, such as wire, rope and strapping.  Capstan Bollard grip designs are simple and cost effective gripping solutions that reduce jaw breaks and sample slippage that are common in direct clamp designs.


Snubbing and Capstan grips rely primarily on friction to hold the specimen. The end of the specimen is clamped lightly between the fixed and movable halves of the split capstan. This holds the specimen in place while it is being installed. Ample radii are provided where the specimen then wraps around the capstan half. For maximum holding power the clamped specimen can be wound counterclockwise around the fixed half and then around the movable half, to achieve an almost full 360 degrees of engagement around the circumference of the grip. If less holding power is required, or when testing shorter specimens, the clamped specimen can be wrapped counterclockwise around the movable half of the split capstan, providing 180 degrees of contact around the circumference.

General introduction

Snubbing and Capstan grips are all engineered to perform high strength tensile tests where the test samples are long compared to their cross-sectional area, such as wire, rope and strapping.  Capstan Bollard grip designs are simple and cost effective gripping solutions that reduce jaw breaks and sample slippage that are common in direct clamp designs.


Snubbing and Capstan grips rely primarily on friction to hold the specimen. The end of the specimen is clamped lightly between the fixed and movable halves of the split capstan. This holds the specimen in place while it is being installed. Ample radii are provided where the specimen then wraps around the capstan half. For maximum holding power the clamped specimen can be wound counterclockwise around the fixed half and then around the movable half, to achieve an almost full 360 degrees of engagement around the circumference of the grip. If less holding power is required, or when testing shorter specimens, the clamped specimen can be wrapped counterclockwise around the movable half of the split capstan, providing 180 degrees of contact around the circumference.


It's sutiable for kinds of textile yarn material, thread etc., with wide range capacity.

snbbing and capstan tensile test fixture

Standard

ISO 2062 Textile tensile test: Breaking Force and Elongation of Yarns

ISO 2062 specifies the method for determining the breaking force and elongation at break of textile yarns (single, piled, or cabled) under a constant rate of extension (CRE). It is a fundamental tensile test for yarn quality control.  

The test operates on the principle of applying a constant rate of elongation to a single yarn specimen until it breaks:

A single yarn is securely clamped between two grips at a fixed gauge length.

The lower grip moves downward at a constant speed, stretching the yarn at a rate of 100% per minute of the gauge length.

The machine continuously records the force (load) applied and the corresponding elongation.

The test ends when the yarn breaks. The maximum force recorded is the breaking force, and the stretch at that point is the elongation at break (expressed as a percentage).

ISO 3341 Tensile Test of Textile Glass Yarn

ISO 3341:2000 Textile glass — Yarns — Determination of breaking force and breaking elongation


ISO 3341 specifies a method for the determination of the tensile breaking force and elongation at break of glass yarns taken from packages.

The method is applicable to various types of glass yarn (single, folded, cabled, strands, structures without twist, rovings, etc.). It is basically intended for single, folded and cabled glass yarns having a diameter of less than 2 mm, or a linear density lower than 2000 tex, taken from packages.  This test is applicable to various types of glass yarn (single, folded, cabled, strands, structures without twist, rovings, etc.). It is basically intended for single, folded and cabled glass yarns having a diameter of less than 2 mm, or a linear density lower than 2000 tex, taken from packages. 

ASTM D2256 Thread and Yarn Tensile Testing of Single-Strand String

ASTM D2256 is the standard test method for tensile properties of yarns by the single-strand method. It is the predominant standard used in North America and is technically very similar to ISO 2062. It quantifies breaking force, elongation at break, and derived properties (tenacity, modulus, toughness) under diverse conditions, serving as a benchmark for quality control, product development, and material specification. 

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