The Test of Mechanical Properties and Simulation of PLA Bio-degradable Composite Film

• Main Authors: WU,BING-HAN, 吳秉翰
• Other Authors: LIOU,NAI-SHANG
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/50253615051080865919

碩士 === 南臺科技大學 === 機械工程系 === 104 === The mechanical properties the bio-composite films which use the PLA (Poly lactic Acid) as the basic materials were studied by using static mechanics test, finite element simulation software in this work. The DIC optically image analysis was using to analyze the pictures which taken during the test to make sure that the films were extend average without any crooked to increase the accuracy of data. In the part of static mechanics test, the tensile testing machine and self-made clamps were used to conduct the ramp-told test of 8 kinds of PLA films which has different kinds of ingredients and content of additives, and calculate the average value and standard deviation by analyze the force, stress and strain according to the test data to make a preliminary comparison for different kinds of PLA films. Then, the finite element simulation software was used to make the simulation to compare with the reality test data. After the test, the relationship between ingredient and mechanical properties of inorganic silicon films is similar to the situation we estimated first, but it has the biggest force at the slowest speed. It can only surmised that the inorganic silicon films may will be hardening gradually after the test. The organic silicon films showed the best mechanical properties at 0.5% of ingredient of silicon. It can be confirmed that the organic silicon films won't produce the similar situation with inorganic silicon films by observed the relationship between ingredient and mechanical properties of organic silicon films. At the part of fitting, the error between the actual data and simulated data was getting bigger as time goes on. It can be confirmed that is related to the broken of films during the test. In the micrograph of films, there are many tiny cracks can be observed. As the result, it can say that the second half of the test may be affected because of the cracks which were getting bigger or extra generated cracks during the test.