ACP (Aluminium Composite Panel), often known as sandwich ACP panel, is one such structure or material. This material is used in the majority of passenger and cargo aircraft, ensuring mechanical performance and lighter weight. Aluminium composite panels (ACPs) are panels that are constructed of an aluminium composite material that consists of a thermoplastic polyethylene core or a fire retardant core sandwiched between thin aluminium sheets. ACP sheet is most commonly used for exterior and interior architectural cladding or walls, artificial ceilings, signs, machine coverings, container construction, and other related purposes. These panels are also used in construction projects of type C.