Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: The thermo-mechanical testing of HYSOL FP4549 polymer-filled underfill materials was conducted under different strain rate and temperature environment. A new specimen preparation procedure and further test methodology are developed to characterize the time–temperature mechanical behaviors of underfill materials. The stress–strain behavior of materials is simulated with constitutive framework, and the dependence of Young’s modulus on temperature and strain rate was evaluated. In addition, the specimens re tested with microforce testing system to evaluate the creep curve of underfill materials as a function of temperature and stress level. In view of the uncertainty of the Young’s modulus determination, the specimens re tested with unloading–reloading technique to verify the test results and investigate its cyclic mechanical behaviors. On the other hand, the adhesion strength of underfill materials are tested beten different adhesion surface by different deformation rate after some isothermal and hygro-thermal environments attack, which is to simulate the environment that the electronic components may be encountered. The results reveal that the rise of the temperature and moisture cause the apparent reduction of the surface adhesion strength, due to the microstructure transition of materials and the diffusion and concentration of moisture. For all conditions of the experiment after environmental preconditioning, the specimen fracture surfaces occur beten solder mask and FR4 substrates, which means the measured strength is the adhesion strength beten solder mask and FR4. Comparing different adhesion surface, the adhesion strength of underfill/FR4 is higher than solder mask/FR4. The interface of solder mask/FR4 is more sensitive to the temperature and moisture. In all of the cases, increasing the moisture level has a varying but significant effect on both fracture strength and absorption energy W. The failure mode transfer and the strength degradation are attributed to the moisture uptake beten the FR4/solder mask and solder mask/underfill interface.
['Chia-Tai Kuo', 'Ming-Chuen Yip', 'Kuo-Ning Chiang']
I am writing a research paper on a idea Time and temperature-dependent mechanical behavior of underfill materials in electronic packaging application
[{"from": "human", "value": "I am writing a research paper on a idea Time and temperature-dependent mechanical behavior of underfill materials in electronic packaging application"}, {"from": "gpt", "value": "Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: The thermo-mechanical testing of HYSOL FP4549 polymer-filled underfill materials was conducted under different strain rate and temperature environment. A new specimen preparation procedure and further test methodology are developed to characterize the time\u2013temperature mechanical behaviors of underfill materials. The stress\u2013strain behavior of materials is simulated with constitutive framework, and the dependence of Young\u2019s modulus on temperature and strain rate was evaluated. In addition, the specimens re tested with microforce testing system to evaluate the creep curve of underfill materials as a function of temperature and stress level. In view of the uncertainty of the Young\u2019s modulus determination, the specimens re tested with unloading\u2013reloading technique to verify the test results and investigate its cyclic mechanical behaviors. On the other hand, the adhesion strength of underfill materials are tested beten different adhesion surface by different deformation rate after some isothermal and hygro-thermal environments attack, which is to simulate the environment that the electronic components may be encountered. The results reveal that the rise of the temperature and moisture cause the apparent reduction of the surface adhesion strength, due to the microstructure transition of materials and the diffusion and concentration of moisture. For all conditions of the experiment after environmental preconditioning, the specimen fracture surfaces occur beten solder mask and FR4 substrates, which means the measured strength is the adhesion strength beten solder mask and FR4. Comparing different adhesion surface, the adhesion strength of underfill/FR4 is higher than solder mask/FR4. The interface of solder mask/FR4 is more sensitive to the temperature and moisture. In all of the cases, increasing the moisture level has a varying but significant effect on both fracture strength and absorption energy W. The failure mode transfer and the strength degradation are attributed to the moisture uptake beten the FR4/solder mask and solder mask/underfill interface."}]