THE EFFECT OF THE NUMBER OF FIBER SHEETS AND NaOH CONCENTRATION ON THE IMPACT STRENGTH OF ALKALI-TREATED ARTHOCARPUS ELASTICUS PEELED FIBER COMPOSITESTITLE. JAMETI [Internet]. 2025 Jun. 30 [cited 2025 Dec. 5];1(1):10-2. Available from: https://journal.isas.or.id/index.php/jameti/article/view/1259