09,22,2026 18 views
Laser flash method for measuring thermal conductivity and thermal diffusivity, Shanghai Chengwei supports scientific research progress at XX University in Inner Mongolia
In the field of modern materials science and engineering, thermal conductivity and thermal diffusivity are important parameters for characterizing the thermal properties of materials. Thermal conductivity represents the ability of a material to conduct heat, while thermal diffusivity reflects the speed at which heat propagates within the material. The accurate determination of these two parameters is of great significance for the design, application, and performance evaluation of materials. In recent years, laser flash method has gradually become the mainstream technology for measuring these two thermal indicators due to its high efficiency and high accuracy.
1、 The principle and advantages of laser flash method
The basic principle of laser flash method is to use a short period of high-intensity laser pulses to irradiate the surface of a material sample, instantly heating its surface. As the heat diffuses inward, the relative temperature change of the sample will be recorded by the measuring detector, thereby analyzing the thermal response of the sample. During this process, the instrument measures the change in surface temperature of the sample over time. Through precise data analysis and fitting, the thermal conductivity and thermal diffusion coefficient of the sample can be calculated.
Compared with traditional measurement methods, laser flash method has multiple advantages. Firstly, due to the short duration of the laser pulse, the sample experiences almost no heat loss, allowing for more accurate measurement results. Secondly, this method is applicable to materials in various states, including solids, liquids, and powders, with lower sample size requirements, providing greater flexibility for experiments. In addition, the laser flash method is easy to operate, highly automated, and effectively improves experimental efficiency.
2、 Shanghai Chengwei's Professional Services: Shanghai Chengwei is a professional company dedicated to providing testing solutions for high-end materials. We have accumulated rich experience in the testing of thermal conductivity and thermal diffusion coefficient for a long time. Recently, we provided on-site services to XX University in Inner Mongolia to assist its scientific research team in conducting experiments related to laser flash method.
In this service, we dispatched a technical team and a complete set of instruments and equipment to ensure the smooth progress of the experimental process. The team members, with their professional backgrounds and rich experimental experience, helped researchers gain a deeper understanding of the principles and applications of laser flash method, providing them with detailed technical guidance.
3、 Specific steps of the testing process
In our cooperation with XX University in Inner Mongolia, we have followed the following basic steps to ensure the accuracy and reliability of the test results:
1. Sample preparation: The research team selected various materials according to the testing requirements, including ceramics, metals, and polymer materials. During the sample preparation process, we provided recommendations for sample thickness and surface treatment for different materials to ensure effective laser absorption.
2. Equipment debugging: On site, we conducted a comprehensive debugging of the laser flash method instrument to ensure that all parameter settings meet the experimental requirements. Laser power, pulse time, detector sensitivity, etc. have all undergone rigorous testing and adjustment to achieve the testing state.
3. Data collection: After the formal testing begins, we irradiate the sample surface with laser and use high-precision detectors to collect data on the temperature changes of the material surface over time. The entire data collection process is monitored in real-time to ensure that there is no external interference affecting the test results.
4. Data analysis: After the test is completed, we use professional software to analyze the collected data and calculate the thermal conductivity and thermal diffusion coefficient of the sample. In this step, our team provided a detailed report, including testing conditions, results, and a credibility assessment of the data, to ensure that the research team can conduct in-depth research based on these results.
4、 The application prospects of laser flash method in scientific research
The laser flash method has not only shown broad application prospects in basic research, but also received increasing attention in the industrial sector. With the continuous development of new materials, especially in the fields of energy, electronics, aerospace, etc., the demand for accurate testing of material thermal properties is increasing day by day. This has led to the increasingly widespread application of laser flash method.
For example, in the development of new energy materials, high thermal conductivity materials can effectively achieve the conduction and utilization of thermal energy, which helps to improve the operational efficiency and safety of equipment. Meanwhile, in electronic packaging technology, the high requirements for heat dissipation performance also make the determination of thermal conductivity values particularly important.
5、 Conclusion
The laser flash method has shown great potential for application in the determination of thermal conductivity and thermal diffusivity due to its unique properties. Shanghai Chengwei's in-depth exploration and innovation in this technology field not only promotes the development of academic research, but also provides reliable testing basis for related industries. Looking forward to the future, working together with more research institutions and enterprises to promote the development of materials science and create a better tomorrow.
