Research trends of metallic sandwich plates with single layer periodically repeated metallic inner structures (PRMIS) - focused on design, manufacturing and formability

Abstract

Recently, the attempt to decrease greenhouse gases, noxious gases and utilized energy sources has emerged as a crucial issue in the world to manage problems of global warming, resource depletion and air pollution. Institutes, universities and industries related to transport vehicles have endeavored to solve these crucial problems through the reduction of the overall weight of transport vehicles. However, the weight reduction of components of transport vehicles greatly affects the strength, the stiffness and the energy absorption of transport vehicles. Metallic sandwich plates with periodically repeated metallic inner structures (PRMIS) have been introduced to meet these conflicting demands. This paper reviews recent research trends of metallic sandwich plates with PRMIS in terms of design, manufacturing and formability. This paper is focused on a single layer PRMIS. Key technologies and the state-of-the art related to design, manufacturing and formability of metallic sandwich plates with PRMIS are discussed. In addition, future research issues of metallic sandwich plates with PRMIS are described.

Creative design for sandwich structures: A review

“…Caliri et al 29 reviewed theories and solution methods for laminated and sandwich structures. A comprehensive review of recent research efforts on the development and characterization of sandwich structures with corrugated, honeycomb, and foam cores was published by Xiong et al 30 Ahn 6 reviewed research on metallic sandwich plates with periodically repeated metallic inner structures in terms of design, manufacturing, and formability. Nikbakt et al 31 presented a review of optimization studies on composite structures by representing a classification based on the type of structures.…”

“…The facings of sandwich structures are relatively thinner than core and seldom exceed several millimeters, while the thickness of the core may be over 50 mm. In order to obtain good mechanical performance, sandwich structure typically has stiff facings (such as aluminum alloys, 1 fiber-reinforced polymer (FRP), 2 and carbon/epoxy prepreg 3 ) and lightweight core (such as processed woods, 4,5 metals, 6 –10 and polymers 11 –17 ). The facing–core interface is the weakest part of the sandwich structure.…”

Speeding up Additive Manufacturing by Means of Forming for Sheet Components with Core Structures

“…Formable sandwich sheets are usually produced by joining a metallic core structure to a metallic face sheet. The core can be designed as a periodically repeated metallic inner structure and is produced by blanking, punching, laser-cutting or stacking and gluing of corrugated foils [4].…”

Fabrication and characterization of open cell porous regular interconnected metallic structure with solid core

“…Dewidar and Lim 20 fabricated inner solid and outer porous structures of Ti-6Al-4V with outer porosity of 30%, 50% and 70% through powder metallurgy technique in vacuum atmosphere. Ahn 21 reviewed the trend to use metallic sandwich plates with single layer periodic repeated metallic inner structure (PRMIS) in design, manufacturing and formability with the perspective to reduce weight without compromising strength, stiffness and energy absorption.…”