What is the Working Process of a Tensile Strength Tester?

A tensile testing machine works by clamping a material sample between two grips. During this mechanism, one grip remains stationary while the other is being pulled away steadily.

In this work, a Tensile force is applied to the material as the grip pulls on it while causing it to stretch until it breaks. The device calculates the corresponding elongation and force used in the material. Moreover, tensile strength, yield strength and other mechanical characteristics of a material are computed by using this data. This process of tensile testing machines helps in the understanding of the behaviour of various materials under tension by researchers and engineers.

How to Use the Tensile Testing Machine?

Tensile Testing Machine is a unique material testing method designed to test the tensile strength and ductility of materials. This machine is designed for various substances ranging from metals and plastics to fibers and paper. The main function of this tensile testing machine is to determine the strength of the material in which the machine applies a tensile force to the sample until it breaks. This test is ideal for quality control, material selection and research purposes.

Using a tensile testing machine involves a series of steps to measure the tensile strength and mechanical properties of a material.

Step by Step Guideline on How to use a Tensile Testing Machine:

Here we will explain about Tensile Testing Machine (also known as Universal Testing Machine (UTM)) step by step guide on how they are commonly used to determine tensile strength, elongation of various material properties.

Preparation Stage:

First, we have to understand about the preparation of the purpose of tensile testing strength properties in which we have to define the testing material like tensile strength, yield strength, elongation etc. After that we can select the appropriate sample guideline standard of each material like ASTM D638 for plastics, ASTM E8 for metals, etc. We can select the material to be tested on that the machine is calibrated and ready for testing in working condition for testing also ensure that the grips and fixtures are suitable for the material and size of the sample After that prepare the sample and wear suitable safety equipment like goggles, gloves for safety purposes and also ensure that the emergency stop button is functional We have to keep away from loose clothes/hair while working on this sample.

Post-Test Stage:

After testing the samples, stop the testing machine and take out the samples. Then the tensile testing samples are tested by the tensile testing machine in which we lift the grip and carefully remove the material of the broken samples and record the tensile data, i.e., the maximum force applied by the machine at which the specimen broke as the machine usually stops automatically when the sample breaks or at predetermined conditions.

Testing Stage:

In this testing procedure we start the testing machine then the tensile testing machine and its related computer interface software is started after that the samples are installed and the grips are opened and the samples are placed in the upper and lower grips and then the grips are securely tightened to prevent slipping. After all successful procedure configure the test parameters and set the parameters in the software and zero the gauge length maximum load or elongation limit, data acquisition rate, load and extension. During this testing procedure the load cell, extension or displacement readings are set to zero. After that the material samples are tested and the tensile test is measured for the material samples using the control software and the load and elongation are also monitored in real time and the test is inspected and the samples are also checked for breakage or failure of the material samples because in most of the cases the machine usually stops automatically after breakage or failure of the material samples.

Here are some of the key global standard test methods that define how to prepare, test, and analyze accurate tensile specimens while ensuring industry-wide compatibility:

ASTM D638: This standard test method is used for testing the tensile properties of plastics

ASTM E8: This standard test method is used for testing the tensile properties of Metallic Materials

ISO 527: This standard test method is used for testing the tensile properties of Plastics

ISO 6892 – Metallic materials — Tensile testing

• Advanced load sensor sensing through advanced electronics.
  • Speed Control through Variable Frequency drive automation by Graphic user interface PC.
  • Highly sensitive load sensor with linearity feature and repeatability
  • Cross-head travel length: 800 mm without grips
  • Twin column rugged structure
  • Safety limit switches for over travel safety
  • Hardened lead screws/ball screws for frictionless movement
  • Load cell calibrated by NABL approved proving ring/dynamometers
  • Advanced Navigation System
  • High accurate micro-controller based system controls with integrated software
  • User Friendly software with intuitive icons and robust architecture
  • Inbuilt hardware/software CD
  • Easy Data Management. User programmable product identification, lot no., shape of specimen, company name, operator
  details etc.
  • USB compatible for high speed data transfer
  • Export Test report in excel format
  • Print preview of test reports with Zoom Feature available
  • Online test run status can be viewed graphically or in raw data form
  • Secured working with key protection feature
  • Ease of use features: Graph setup, test control wizard, formulae/result calculations, reports, live test panel.
  • Graph setup: user defined graph scale/range with Graph Title
  • Test Control Wizard to set test parameters like tension, compression, changeable units in Kgs/N/lbs or cm/mm/inch.
  • Automatic end test/return to home position through software interface after completion of test.
  • Immediate analysis of results after test with complete accuracy & precision.
  • Option to email test reports
  • Single Test start with one click entry of the mouse.