Test Consultation

Apadana Laboratory conducts a complete range of performance, mechanical, and environmental tests to evaluate product quality, including the following:

Belt Laboratory:

Tensile Strength Test:

This test measures the resistance of materials against tensile forces. In this method, a belt or polymer sample is subjected to a pulling force, and the force required for rupture or permanent deformation is recorded. This is one of the main mechanical tests to evaluate belt quality and is directly related to the product's durability and reliability.

Tooth Shear Resistance Test:

This test evaluates the strength of timing belt teeth against shear forces. In this method, several teeth of the belt are subjected to controlled loading to determine the conditions under which teeth may break or deform.

Thread-to-Rubber Adhesion Test:

This test measures the bond strength of reinforcement threads (such as polyester, aramid, or fiberglass threads) to the rubber substrate of the belt. The prepared belt sample is pulled until the force required to detach the thread from the rubber is recorded. Proper thread-to-rubber adhesion is vital for tensile strength, dimensional stability, and long-term performance of the belt.

Fabric-to-Rubber Adhesion Test:

This test evaluates the strength of the fabric layer covering the belt surface to the rubber substrate. The belt sample is pulled to measure the force required to separate the fabric from the rubber.

Elongation Percentage Calculation:

This test measures the relative elongation of the sample under tension until failure. The belt sample is pulled, and the percentage elongation under a specified force is recorded.

Rubber Hardness Test:

This test determines the surface resistance of the rubber to indentation and is one of the main quality control tests for belts. Appropriate rubber hardness balances flexibility and mechanical strength, ensuring that the belt is neither too soft, causing rapid wear, nor too hard, making it brittle.

Dimensional Profile Measurement Test:

This test inspects and controls the geometric dimensions of the belt and the tooth profile according to designed standards. Using precise measuring equipment, the shape and dimensions of the belt are evaluated. Dimensional profile measurement is crucial to detect deviations that may lead to slippage, increased noise, reduced efficiency, or premature belt and power transmission system failure, making it vital for quality assurance and product performance.

Thermal and Aging Resistance Tests:

These tests evaluate the stability of the belt's mechanical and physical properties against temperature, oil, sodium chloride, and boiling water. The belt sample is tested under controlled conditions, and changes in its properties are measured. These tests are important for ensuring long-term durability under harsh working conditions, correct material selection, rubber formulation, and prevention of premature failure due to temperature or other substances.

Durability Test:

This test evaluates the operational lifespan and reliability of the belt under real working conditions. The belt is mounted on a testing system (engine simulator or standard test setup) and subjected to specified loads, speeds, temperatures, and durations. This test reflects the belt's actual performance in the field and is a key indicator for customer satisfaction and automaker requirements. Results from this test are usually the basis for warranty and product standards.

Noise Measurement Test:

This test measures the noise and vibration generated by the belt during operation. The belt is installed on a test system under specified operating conditions (speed, load, temperature, and time) and monitored using sensors. Noise level is an important indicator of belt quality and user comfort. Noise control not only improves customer satisfaction but also indicates the health of the power transmission system.

Bearing Laboratory:

Noise and Vibration Test for Bearings, Idlers, and Belt Tensioners:

This test evaluates the noise and vibration levels generated by bearings during operation. The bearing, idler, or tensioner is mounted on a testing device, and noise parameters are recorded in decibels using vibration sensors.

Radial Clearance Test for Bearings, Idlers, and Belt Tensioners:

This test measures the clearance or gap between the ball surfaces and the internal/external sliding paths of the bearing. The aim is to assess manufacturing quality, dimensional tolerance, and ensure proper performance under heating and thermal expansion conditions.

Geometric Tolerance Test for Idlers and Belt Tensioners:

This test checks the dimensional accuracy of components according to geometric standards. Geometric tolerances include roundness, straightness, cylindricity, flatness, perpendicularity, and more.

Durability Test for Bearings, Idlers, and Belt Tensioners:

This test evaluates the actual lifespan and reliability of the products under operational conditions. Objectives include:
- Determining the useful life of the tested product.
- Identifying failure modes such as wear, cracks, or breakage.
- Assessing material quality, design, and manufacturing processes.

The importance of this test includes ensuring stable and defect-free performance of power transmission system components, reducing the risk of sudden failures, accurately predicting replacement times, and providing reliable information to customers and automakers to guarantee product quality and warranty.