Drop Weight Impact Tester: Working Principle & Buying Guide



When you are responsible for testing material performance, accuracy is critical. In research institutions, universities, and textile or plastic manufacturing facilities, knowing how materials react to sudden impact is essential.

Impact behavior plays a key role in quality control and product development. Static tests alone cannot reflect real working conditions. In real life, materials usually fail because of sudden drops, collisions, or external hits, not slow loading.
This is why the drop weight impact tester is widely used across many industries. It allows you to recreate real impact situations in a controlled and repeatable way.
The testing process follows recognized standards. Whether you are testing plastic pipes, rigid sheets, or engineered polymers, this equipment helps you measure impact resistance with confidence and consistency.
In this guide, you will learn what a drop weight impact tester is and why it is important. You will explore the different types available and gain a detailed overview of how the machine works, how to evaluate its performance, and how to check compliance with industry standards.
Let’s dive into the article to know everything in detail:

What Is a Drop Weight Impact Tester?

A drop weight impact tester is a laboratory testing machine designed to measure a material’s resistance to sudden impact forces. The test simulates a real-world scenario in which an object falls vertically and strikes a specimen with controlled energy.
The objective is to determine whether the material cracks, deforms, penetrates, or absorbs the impact energy without failure. This equipment is also commonly referred to as a:
  • drop weight impact testing machine
  • falling weight impact tester
  • drop weight testing machine
  • drop impact test machine
Although the names vary, the working concept remains the same: gravitational energy is converted into impact energy to test material toughness.
You typically use this equipment to evaluate:
  • Plastic pipes and fittings
  • Rigid plastic sheets
  • Engineering plastics
  • Composite materials
  • Construction and building materials
For quality control personnel, this test ensures that products meet safety and durability requirements. For researchers and educators, it provides reliable, repeatable data for analysis and instruction.
Drop weight impact testers are available in different configurations depending on material type, specimen size, impact energy range, and testing standards. Selecting the right type depends on your application requirements.

Drop Weight Impact Tester DW5351

The Drop Weight Impact Tester DW5351 is a high-precision testing instrument specifically designed to determine the impact toughness of plastic pipes and rigid plastic materials. It is also known as a Falling Weight Impact Tester or Drop Weight Tester and is widely used in laboratories, manufacturing plants, and research facilities.
You can use this model to test:
  • PVC-U feed pipes
  • Drainage pipes
  • Low-pressure feed pipes
  • Low-pressure water pipes
  • Core-layer foam pipes
  • Double-wall corrugated pipes
  • PE water pipes
  • Rigid plastic sheets
Because of its versatility and accuracy, the DW5351 is considered an ideal solution for testing institutions, production units, building materials industries, and scientific research organizations.
FYI is recognized as one of the best drop weight impact tester suppliers in China, offering this model with a strong balance of quality, performance, and affordability.

Industry Recognition and Global Reach

All testing instruments manufactured by FYI are widely used throughout China and exported to more than 50 countries worldwide. The global adoption of FYI equipment reflects consistent performance, reliable engineering, and excellent value for professional users.
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Key Features of Drop Weight Impact Tester DW5351
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The DW5351 is engineered with advanced features to ensure precise results and safe operation:
  • LED digital display for clear data visualization and long operating life
  • Adjustable impact height from 50 mm to 2000 mm, covering a wide range of testing energies
  • Imported servo motor control system for fast, smooth, and efficient lifting
  • Automatic height calibration with calibration accuracy up to ±2 mm
  • Combined striker system, allowing flexible assembly of different striker weights
  • Pneumatic capture device to prevent secondary impact and ensure test accuracy
  • Combined V-block support, suitable for specimens with different diameters
  • Optimized falling pipe and vent hole design, minimizing air resistance and reducing friction damage to less than 2%
  • Twin-screw specimen support, providing superior stability and rigidity during testing
These design elements ensure that you receive reliable, repeatable results while protecting both the specimen and the equipment.

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