Abstract
The impact test is a test to determine the strength of the material when receiving a load constantly or suddenly. The previous tool did not meet the test requirements, so it required the development of the pendulum weight sector, the measuring scale and the addition of a braking system. Therefore, this research was carried out for the development of previous tools so that the test tools could meet the requirements and the testing of the tools using ST 41 and ST 60 carbon steel specimens. This research is a research and development study using ADDIE (analysis, design, development, implementation and evaluation) as a reference in conducting research. The development of the tool focuses on the pendulum weight to 10.2 kg, replacing the measuring scale and adding a braking system that uses disc brakes. The results of the expert validation questionnaire got a score of 72.63%, the small respondent data questionnaire got a score of 83% and the large-scale respondents got a score of 85%. This shows that the tool gets a decent score. The results of the performance test of the tool using ST 41 carbon steel with an average impact price of 1.02302732 J / mm and carbon steel ST 60 with an average impact price of 1.2422299 J / mm. This study shows that there is an average difference in the impact price between ST 41 carbon steel and ST 60 carbon steel as indicated by the Sig. (2-tailed) value of 0.484 using independent sample test T-test data processing.
Highlights
The impact test is a test to determine the strength of the material when receiving a load constantly or suddenly
The previous tool did not suited to the test requirements, so it required the development of the pendulum weight sector, the measuring scale, and the addition of a braking system
The development of the tool focuses on the pendulum weight to 10.2 kg, replacing the measuring scale and adding a braking system that uses disc brakes
Summary
Pengujian impak merupakan pengujian kekuatan bahan material saat menerima beban secara konstan dengan jumlah energy yang diserap oleh bahan material selama terjadi patahan. Energi yang diserap adalah ukuran ketangguhan suatu bahan dari keuletan dan kegetasan bahan itu. Dalam pengujian impak memiliki 2 metode yang menjadi standart yaitu metode charpy dan metode izod. Uji impak metode charpy memiliki spesifikasi bahan uji luas 10 mm x 10 mm dengan takikan berbentuk V yang memiliki kedalaman 2 mm dengan radius pusat 0.25 mm. Pengujian dilakukan dengan cara pembebanan dilakukan secara konstan pada titik tengah spesimen dan spesimen dihadapkan membelakangi laju pendulum [1]. Sedangkan metode izod memiliki spesifikasi bahan uji luas penampang 10 mm x 10 mm dan panjang 75 mm dan mempunyai takikan berbentuk V dengan kedalaman 2 mm [2]
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