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.

Here's a step-by-step guide on how to use a tensile testing machine:

🔧 1. Prepare the Specimen

Select the material to be tested (e.g., metal, plastic, rubber).

Measure and material dimensions and record: length, width, thickness, gauge length.

Ensure the specimen complies with relevant standards (ASTM, ISO, etc.).

🧰 2. Set Up the Machine

Turn on the tensile testing machine.

Choose the correct grips for the material type (wedge grips, pneumatic grips, etc.).

Calibrate the machine if necessary or confirm calibration status.

🛠️ 3. Mount the Specimen

Secure the specimen in the top grip first.

Slowly lower the crosshead (if manual) or use machine controls.

Clamp the specimen in the bottom grip, ensuring alignment with the load axis to avoid bending stresses.

📊 4. Set Test Parameters

Input test settings:

Test type (tensile)

Crosshead speed or strain rate

Gauge length

End condition (e.g., stop at break)

Zero the load and extension readings.

▶️ 5. Start the Test

Begin the test via software or control panel.

The machine will apply a gradual tensile force.

Observe the force-extension or stress-strain curve in real-time.

📉 6. Monitor the Test

The machine records key data:

Yield strength

Ultimate tensile strength (UTS)

Elongation at break

Modulus of elasticity

Stop the test when the specimen breaks or the predefined endpoint is reached.

📄 7. Analyze and Save Results

View the graph and numerical results.

Export or print the test report.

Compare results against material standards or design specifications.

🧹 8. Clean Up

Remove broken specimen pieces.

Turn off the machine properly.

Document the test if part of a quality control or research process.

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.