A review on failure characteristics of polymer gearWafiuddin Md Ghazali, Daing Mohamad Nafiz Daing Idris, Azizul Helmi Sofian, Januar Parlaungan Siregar and Ismail Ali Abdul AzizMATEC Web Conf., 90 (2017) 01029DOI: https://doi.org/10.1051/matecconf/20179001029