Servo controlled tensile testing machine is one type of precise testing device works by using electronic signals sent back from sensors during operation. This machine adjusts itself constantly while pulling on a sample piece. Feedback helps it stay accurate throughout each measurement cycle. Instead of relying on hand adjustments, the system changes power output based on live data. Sensors track how much force is applied, plus how far the material stretches. The process runs without constant human oversight because corrections happen instantly.

How it Works

What makes it a servo tensile testing machine is how it checks where things actually are, then adjusts based on what is needed. Instead of guessing, it keeps measuring - matching real movement against the goal all along.

Variable Speed and Load:

It can maintain constant stress, constant strain, or constant speed (e.g., from 0.01 to 1000 mm/min) during the test.

Data Analysis:

Most models are fully computerized, providing real-time stress-strain curves and automatically calculating values like Ultimate Tensile Strength (UTS), yield strength, and elongation.

Primary Types

Ball screws driven by an adjustable AC or DC motor shift the crosshead position in UTM servo controlled machine. Usually seen handling forces under 100 kN, they fit well with testing plastics, fabrics, or elastic compounds.

Heavy-duty testing machines move with oil pushed by precise valves. When big strength matters - like checking steel or thick beams - these handle forces from 1000 to 3000 kilonewtons. Built tough, they push through demanding jobs involving metal, concrete, or massive frameworks.

Key Features

Safety:

Includes emergency stops, overload protection, and automatic limit switches to prevent machine damage.

Versatility:

With interchangeable grips, it can perform compression, bending, shear, and peeling tests in addition to tensile tests.

Common Applications in Different Industries

These machines are essential in quality control and R&D across industries:

• Manufacturing: Testing fasteners, wires, and cables
• Construction: Testing TMT bars, concrete, and steel components.
• Packaging: Checking the strength of plastic films and adhesives.

Process of tensile strength measurement

Usually, workers shape the sample into what looks like a dumbbell. That form helps control where it snaps. Breaks happen right in the middle part instead of near the ends. The design keeps stress focused where needed.

Starting off, the test piece’s initial width across and stretch mark get checked before going into the servo based universal testing machine. What comes next is feeding those numbers directly into the program tied to the device. Numbers like how wide it started and the marked distance go in early.

Speed of pulling gets set first. Then the machine follows how fast it stretches. Settings go in before starting. Each test runs at a chosen pace. The stretch speed matters most. Programmed steps control every move. Rate of strain adjusts ahead of time.