INVESTIGATION OF VARIABLES GEOMETRY OF NOVEL PIN CORE-SANDWICH STRUCTURE ON UNSATURATED POLYESTER FLEXTURAL PROPERTIES. THE IRAQI JOURNAL FOR MECHANICAL AND MATERIALS ENGINEERING, [S. l.], v. 22, n. 3, p. 1–12, 2023. DOI: 10.32852/iqjfmme.v22i3.624. Disponível em: https://iqjfmme.com/index.php/jmme/article/view/624.. Acesso em: 12 may. 2025.