Kaji Eksperimental Campuran Minyak Sawit Dengan Polyol Ester(Poe) Oil Sebagai…

Every machine element that moves and comes into contact will experience failure. This is due to contact between two objects or friction. In other words, friction will definitely occur when objects move and contact each other. This friction that occurs can cause damage or loss of particles from a material, which is called wear. Wear occurs when two objects press and rub against each other. To pr…