Fibre Tensile Test

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Introduction

The fibre tensile test is a key mechanical test used to evaluate individual fibres' strength and elongation properties. The test is widely used in materials science, textile engineering, and composite material research. It is a fundamental method for assessing the mechanical properties of fibres, ensuring they meet the requirements for their intended applications. Key Parameters Measured

Tensile Strength: The maximum stress the fibre can withstand before failure.
Modulus of Elasticity: A measure of the fibre's stiffness.
Elongation at Break: The extent to which the fibre can stretch before breaking.

Principle

The fibre tensile test operates on the fundamental principle of subjecting a single fibre to a uniaxial tensile force under controlled conditions, intending to characterize its mechanical properties. The test provides critical insights into: Tensile Strength The maximum stress the fibre can withstand before breaking. Elongation at Break The amount the fibre stretches before it breaks. Young’s Modulus A measure of the fibre’s stiffness or resistance to deformation.

Principle

Test Procedure

Our fibre tensile testing workflow typically includes:

Sample preparation: Select suitable fibres, drying pretreatment
Conducting the Test:Moun the Fibre, Set Test Parameters according to the relevant standard

The initial modulus of a fiber is determined by measuring the slope of the stress-strain curve in the very early, linear portion of the curve, where the relationship between stress and strain is proportional. This is typically done by drawing a tangent to the curve at the origin (the starting point) and calculating the ratio of stress to strain within this linear region.
The initial modulus represents the stiffness of the fiber at the beginning of deformation. It indicates how much the fiber resists elastic deformation under an applied load. A higher initial modulus means the fiber is stiffer and less likely to stretch when a small force is applied.

The initial modulus of a fiber is determined by measuring the slope of the stress-strain curve in the very early, linear portion of the curve, where the relationship between stress and strain is proportional. This is typically done by drawing a tangent to the curve at the origin (the starting point) and calculating the ratio of stress to strain within this linear region.
The initial modulus represents the stiffness of the fiber at the beginning of deformation. It indicates how much the fiber resists elastic deformation under an applied load. A higher initial modulus means the fiber is stiffer and less likely to stretch when a small force is applied.

Onset of Localized Deformation: After the fiber reaches its maximum (ultimate) tensile strength, a localized region may begin to deform more than the rest, leading to a reduction in the cross-sectional area at that point. This is known as necking.
Decrease in Load-Bearing Capacity: In some fibers, molecular alignment or microstructural changes during stretching can also lead to a reduction in stress with increasing strain.
Material Structure Changes: In some fibers, molecular alignment or microstructural changes during stretching can also lead to a reduction in stress with increasing strain.

Application

Applicable industries

Applicable Material Types:

Natural fibres: cotton, wool, silk, flax, jute.
Synthetic fibres: polyester, nylon, acrylic, and polypropylene, etc.
Regenerated fibres: viscose rayon, lyocell, and acetate.
Mineral fibres: glass fibres, basalt fibres, and asbestos.
Special fibres: metal fibres, carbon fibres, aramid fibres (e.g., Kevlar), and ultra-high-molecular-weight polyethylene (UHMWPE) fibres.

Industrial Application

Industries and Applications:

Traditional Textile: fibres that process into yarns, apparel or home textiles.
Aerospace: fiber-reinforced fuselage sections, wings, tail assemblies, ballistic protection panels.
Automotive equipment: interior components that are made from fibres.
Civil engineering: geotextile fabric, ropes, cables.
Medical Devices: fibre-reinforced 3D printing, surgical sutures, implants, and tissue engineering scaffolds.
Filtration and Protective Equipment: Fibres in filters, bulletproof vests, and fire-resistant clothing.

Heat treatment: Carburizing

Example Results

Average breaking strength and elongation of PLA

	1	2	3	4	5	6	7	8	9	10	Average
Strength (cN)	110.10	165.1	132.4	155.1	110.4	144.1	139.4	160.1	130.6	156.3	139.5
Elongation (%)	78.6	113.2	91.8	108.2	78	109.4	98.6	109	95.6	116.6	100.5

Sample Requirements

To ensure accurate measurements, samples should meet these guidelines:

For Staple Fibre:
- Sufficient quantity (≥10 )
- Length: 5-60mm
For Filament Fibre:
- Length: 5-50cm, depending on the test method
Other notes:
- Condition: Notify if fibre is free from visible defects such as knots, kinks, crimps, or surface damage.
- Packaging: Airtight and moisture-proof containers.

Feel free to contact our team for questions regarding specific materials or sample preparation requirements. If your sample exceeds standard requirements, please contact us for a customized solution.

The Fibre Tensile Test is a fundamental mechanical test used to determine individual fibres' strength and elongation properties. This test is crucial in materials science, textile engineering, and composite material research, as it provides essential information about how fibres will perform under tension in real-world applications.

Regulatory testing

Environmental testing

Data analysis

Regulatory testing

Environmental testing

Data analysis

Sample Requirements

Application Case

Example Result

What our customers are saying

Need precise analysis? Contact us – we'll help you choose the best solution for your needs.

Frequently Asked Questions

Variant (SKU)

Introduction

Introduction

Principle

Principle

Principle

Test Procedure

Application

Applicable industries

Applicable Material Types:

Industrial Application

Industries and Applications:

Heat treatment: Carburizing

Example Results

Sample Requirements

Regulatory testing

Environmental testing

Data analysis

Regulatory testing

Environmental testing

Data analysis

Sample Requirements

Application Case

Example Result

What our customers are saying

Need precise analysis? Contact us – we'll help you choose the best solution for your needs.

Frequently Asked Questions

Fibre Tensile Test

Variant (SKU)

Introduction

Introduction

Principle

Principle

Principle

Test Procedure

Why is the Distinct Yield Point often absent in the Fiber Stress-Strain Curve?

How is the initial modulus of a fiber determined? What does it represent?

Why is there a segment of the stress-strain curve with a negative slope in the yield phase?

Application

Applicable industries

Applicable Material Types:

Industrial Application

Industries and Applications:

Heat treatment: Carburizing

Example Results

Sample Requirements

What are the three types of tensile strength?