Key Information About the ISO 178 - 3-Point Test Device
The ISO 178 3-point test device is professional equipment designed to evaluate the mechanical properties of thermoplastic materials by measuring their flexural strength.
Accurately measuring the mechanical properties of thermoplastic materials plays a crucial role in quality control and product development processes. The ISO 178 standard serves as a fundamental reference for determining flexural strength and material durability. In line with this standard, 3-point test devices are designed to evaluate deformation properties and assess the durability of materials.
What Is the ISO 178 Standard?
ISO 178 is an international standard used to measure the flexural strength of thermoplastic and other polymer-based materials.
- Scope: Includes determining the flexural strength, elastic modulus, and deformation properties of materials.
- Purpose: Measures the mechanical durability, service life, and performance of materials.
- Applicability: Suitable for thermoplastic materials, polymers, and other flexible materials.
This test provides a detailed analysis of the flexural strength (maximum strength point) and deformation behavior of materials.
Working Principle of the 3-Point Test Device
3-point test devices measure the flexural strength of a material by placing it between two support points and applying force at its center.
Step 1: Sample Preparation
The material is prepared in compliance with ISO 178 standard dimensions and placed on the support points of the device.
Step 2: Application of Force
The central force application mechanism of the device applies a controlled downward force on the material.
Step 3: Measurement and Analysis
The deformation caused by the applied force is measured, and parameters such as flexural strength and elastic modulus are calculated.
This method reveals critical properties such as the material's flexibility, fracture point, and permanent deformation.
Other Properties Evaluated by the 3-Point Test
3-point test devices are not limited to flexural strength evaluation; they also assess several mechanical properties:
- Load/Unload Durability: Resistance to repeated loading.
- Fracture and Tear Resistance: Identifies the breaking point of the material under external forces.
- Compression and Fracture Resistance: Analyzes durability under high pressure.
- Elasticity and Permanent Deformation Analysis: Measures elasticity and deformation.
- Puncture and Bending Tests: Assesses resistance to bending and puncture forces.
These tests provide extensive evaluation opportunities to optimize the performance of materials used in industrial and manufacturing processes.
Other Related Standards and Their Objectives
- TS EN ISO 7500-1:
Ensures the accuracy and calibration of tensile and compression test devices.
Guarantees precision in measurement. - TS EN ISO 527-3:
Applied for tensile strength measurement in plastic materials.
Used in analyzing elasticity and breakage strength of polymers and derivatives. - TS EN ISO 6892-1:
Defines the tensile strength and mechanical properties of metal materials.
Critical for ensuring the reliability of metal structures in engineering applications. - TS 1398-1:
Applied for tensile and tear strength testing of textile products.
Used in quality control processes for fabrics. - EN ISO 527-1:
Covers tensile tests for evaluating general mechanical properties of plastic materials.
Serves as a guide for analyzing material elasticity and strength.
Conclusion
ISO 178 3-point test devices are among the most effective methods for evaluating the flexural strength and other mechanical properties of thermoplastic materials. The reliable results provided by these devices play a critical role in quality control and R&D processes in manufacturing. Additionally, with the contributions of other standards, it becomes possible to comprehensively evaluate the overall performance of materials.
