SERVO CONTROLLED UTM

A Servo Controlled Universal Testing Machine (UTM) is a precision material testing system used for mechanical testing of materials — such as metals, plastics, composites, rubber, textiles, and more — under controlled loading conditions. It integrates servo technology with hydraulic or electromechanical actuation to enable automated, closed-loop control of force and displacement, resulting in highly accurate, repeatable test results across a wide range of applications.

Commonly used tests include:

• Tensile (pull)

• Compression (push)

• Bending / Flexural

• Shear / Peel / Tear

• Stress–strain evaluation
  These tests help determine mechanical properties such as ultimate strength, yield strength, modulus of elasticity, ductility, toughness, and more.

⚙️ Key Technical Features & Specifications

🔹 Servo Control System

• Uses a servo hydraulic or servo electromechanical drive to precisely control load and crosshead motion in a closed-loop feedback system.

• Supports load rate control, elongation/strain rate control, and load hold modes for programmable testing.

🔹 Load & Displacement Measurement

• Load measurement via high-accuracy load cell.

• Displacement/elongation via encoder or extensometer feedback with high resolution.

• Position and speed can be controlled with tight accuracy (often ±0.5 % or better).

🔹 Test Speed & Range

• Infinitely variable test speed from very slow (0.001 mm/min) to faster rates (hundreds of mm/min).

• Wide test space and crosshead adjustment to accommodate diverse specimen sizes.

🔹 Controller & Software

• Computerized control with touchscreen or PC interface for test setup, real-time graphing, data analysis, and reporting.

• Software often provides stress–strain plots, statistical data, and test templates.

🔹 Accessories & Extensions

• Grips for round, flat, threaded, or specialty specimens.

• Extensometers, bending fixtures, compression platens, shearing anvils, and environmental chambers.

🛠️ How it Works (High-Level)

1. Specimen mounting: The test sample (e.g., metal bar, plastic strip) is clamped between upper and lower grips.

2. Control setup: Operator selects test mode (load or strain control) and test parameters via controller/software.

3. Servo actuation: The servo system adjusts hydraulic or motorized crosshead motion based on real-time feedback from sensors.

4. Data capture: Load and deformation are continuously recorded and used to compute mechanical properties.

5. Output: Results like stress–strain curves, peak load, yield strength, and elongation at break are generated.

🧪 Applications

Industrial & Lab Testing

• Quality control in manufacturing

• Research & development

• Material certification laboratories

• Educational institutions

• Construction and civil engineering testing facilities