SLOW THERMAL CYCLES
A slow thermal cycle is a process that simulates conditions of gradual exposure to temperature and humidity variations over time. These tests are used to assess the durability and stability of a material when subjected to slow thermal or climatic changes, reflecting real-world exposure scenarios, such as seasonal or environmental variations. During the test, the material undergoes cycles of heating, cooling, and controlled humidity based on specific temperature ramps or test programs set by the client or industry standards.
SLOW THERMAL CYCLES: THERMAL AGING TESTS AND MATERIAL RESISTANCE
Thermal aging tests are essential for assessing the resistance and adaptability of materials to slow variations in temperature and humidity. These tests are crucial for ensuring that materials, components, or finished products can withstand harsh and cyclical environmental conditions over time while maintaining their properties and functionality. At the APM (Analysis and Material Testing) Laboratory in Turin, we conduct slow thermal cycles following strict standards and procedures, providing reliable results for various industrial sectors, such as automotive, electronics, and the metalworking industry.
CHARACTERISTICS OF SLOW THERMAL CYCLES
Slow thermal cycles can vary in intensity and duration depending on the specific requirements of the client. The main characteristics of slow thermal cycles include:
● Temperature: The temperature range during the test typically varies from -40°C to +150°C, aiming to simulate extreme environmental conditions to which materials may be subjected over time.
● Humidity: The test also includes controlled humidity variations, with values adjustable from 0% to 100% relative humidity. This is particularly important for materials sensitive to humidity, such as electronic materials or those used in the automotive industry.
● Gradual Heating and Cooling: The key feature of slow thermal cycles is that the temperature changes occur gradually, following precise thermal ramps, to avoid thermal shocks that could alter the physical and chemical properties of the material.
HOW ARE THERMAL AGING TESTS PERFORMED?
At the APM Laboratory in Torino, slow thermal cycles are carried out in highly controlled environments, using climate chambers and variable temperature ovens that ensure precise temperature and humidity levels throughout the duration of the test. The process involves the following stages:
SAMPLE PREPARATION
The material or component to be tested is selected and prepared according to the specifications provided by the client. The geometry and dimensions of the sample are crucial to ensure an accurate test.
EXPOSURE TO THERMAL CYCLES
The sample is exposed to cycles of heating, cooling, and humidification following the established temperature ramps and humidity specifications. During the test, the material will undergo alterations due to the gradual changes in environmental conditions, simulating the effects of aging.
MONITORING AND CONTROL
The test is continuously monitored through temperature and humidity sensors to ensure that the parameters are maintained consistently and that no sudden fluctuations occur. This control is essential to obtain reliable and repeatable data.
OBSERVATIONS AND DOCUMENTATION
At the end of the test, the material is visually inspected and measured using measuring instruments to check for any damage, alterations, or variations in the mechanical and physical properties. A detailed test report is generated, including the description of the test conditions, observations, and photographic documentation to record the material's condition before and after the cycle.
EVALUATION OF RESULTS
Once the test is completed, the results are analyzed to determine whether the material has maintained its original characteristics or if it has undergone significant damage, such as cracking, expansion, deformation, or changes in physical properties.
APPLICATIONS OF SLOW THERMAL CYCLES
Slow thermal cycles are used in various industrial sectors and for a wide range of materials. Below are some of the main applications:
Automotive
Materials used in vehicles, such as plastics, gaskets, fabrics, and metal components, must withstand thermal cycles and humidity without compromising safety or comfort. Thermal aging tests are essential to ensure the durability of interior parts and long-term performance.
ELECTRONICS
For electronic components, slow thermal cycles are used to assess resistance to temperature fluctuations and moisture-induced damage, ensuring that devices continue to function reliably under real-world operating conditions.
METALWORKING
Metallic materials, coatings, and surface treatments must be tested to withstand temperature and humidity variations without losing their structural properties, such as hardness and toughness.
Contact Us for More Information
The APM Laboratory in Turin specializes in performing thermal aging tests for all types of materials. With our years of experience and high-precision equipment, we are able to provide accurate and reliable results, adhering to the standards and specifications required by our clients.
Contact us for more information on slow thermal cycles and to learn how we can help you test and certify the resistance and durability of your materials according to your specific needs. Our laboratory is the ideal partner to ensure that your materials can withstand the most extreme temperature and humidity cycles.