Laboratory bending tests

You want to perform out bending tests on your materials...

What is a bending test?

Flexure testing is a laboratory analysis used to assess the resistance of materials to bending. When a force is applied to a material at one end, the bending test measures the material’s response in terms of deformation. Bending test results can provide valuable information on a material’s ability to resist bending forces.

In physics, the bending test is the ability of a material to resist deformation under load. It is expressed in bending.

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Why carry out a bending test on your materials?

By analyzing the bending capacity of materials, industries can design stronger, more durable products. Flexural testing can also help identify potential material weaknesses and improve quality.

The properties measured are :

flexural modulus of elasticity Eff,
bending stress σff,
bending strain εff and
stress-strain response

Flexural testing of polymers

For polymer materials, the bending test consists of subjecting a part to bending stress, thereby assessing its strength and rigidity. The results of this test are decisive in confirming that the polymer complies with industry standards and is suitable for its intended use. Polymer materials are frequently used in the manufacture of products such as automotive parts, packaging, construction products and medical devices.

Flexural testing is therefore a key step in the production of quality polymer materials that meet industry requirements and safety standards.

The FILAB laboratory can assist you in carrying out your flexural tests on your polymers

With the support of a partner laboratory, FILAB can help you carry out bending tests on your materials in accordance with current standards.

Our laboratory bending test services

Our laboratory flexural testing services are carried out using precision and reliable equipment. We understand the importance of bending in the production of polymers, ceramics, metals and industrial parts, and are committed to delivering reliable results.

Bending test in materials quality control
R&D bending test for medical devices
Flexural tests on hardenable or thermoplastic plastics (ISO 178)
Impact bending test on polymers (Charpy test)

ISO 178 bending test standard

ISO 178, also known as the three-point bending test, is used to assess the strength of materials when bent under load.

In line with industry requirements, ISO 178 defines the key criteria for flexural testing of plastics and fiber-reinforced composites. It provides detailed instructions on the test conditions and equipment required for a correct and accurate test. Test results enable industries to guarantee the quality of their products by ensuring that they meet the required safety and performance standards.

Our mechanical analysis services

FILAB offers other types of mechanical analysis :

The positive aspects of FILAB

  • A highly qualified team

  • Responsiveness in responding to and processing requests

  • A complete analytical park of 2100m²

  • Tailor-made support

our FAQs

What properties are studied for the bending test ?

Bending tests are used to evaluate the mechanical properties of a material, such as :

-Flexural modulus, which measures a material's stiffness.

-Stress at elongation, which measures a material's resistance to deformation,

-Yield strength and breaking strength, which determine the load limits a material can withstand before permanently deforming or breaking.


Which materials for bending tests ?

Flexural tests measure the mechanical properties of polymers, as well as other materials such as metal, wood, paper, cardboard and ceramics. 

What is the three-point bending test ?

The three-point bending test refers to a technique used to measure the mechanical strength of a material. In this test, a uniformly distributed load is applied to a beam resting on two support points. A third force is then applied to the center of the beam, causing it to bend. By measuring this bending, we can determine the rigidity and strength of the material in question.

Thomas GAUTIER Head of Materials Department
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