Comparison on Compressive Behaviour of Aluminium Honeycomb and Titanium Alloy Micro Lattice Blocks

Abstract

The paper discusses the compressive behaviour of two materials, the conventional aluminium honeycomb and the new titanium alloy micro lattice blocks. The new titanium alloy micro lattice structure is being developed as core material candidate in sandwich construction for aerospace application. Experimental tests have been done on the blocks in order to compare its property with the aluminium honeycomb. Compression strength as well as compressive behaviour of both materials are compared and observed. The mechanisms that contributed to the differences in their performance are discussed and this will be used to improve the geometrical and structural design of micro lattice structure in order to achieve properties that are superior or at least comparable with that of aluminium honeycomb.

Tuning of Static and Dynamic Mechanical Response of Laser Powder Bed Fused AlSi10Mg Lattice Structures through Heat Treatments

“…All curves, in every heat treatment condition, are characterized by an initial linear elastic growth up to a stress maximum, followed by a decrease in stress due to shear deformation; thereafter some low-stress oscillations take place. No plateau-like region was present in the studied conditions, as could be expected considering the selected geometry of the unit cell, [29,30] This behavior, as evidenced by the samples photographs shown in Figure 6, is connected to the progressive bending and collapse of struts belonging to shear planes, which lie at 45 with respect to the loading direction. In particular, the first large stress peak is related to the formation of an extensive shear band encompassing the whole sample, whereas successive reduced oscillations are connected to smaller shear bands, which comprise a lower number of unit cells.…”

Manufacturing and Characterization of Ti6Al4V Lattice Components Manufactured by Selective Laser Melting

“…Studies on SLM Ti6Al4V micro-lattice structure as core material in sandwich construction showed that this material has significant potential that merits further examination and analysis [17,18]. …”

“…The potential of the SLM Ti6Al4V material as high performance parts in aerospace, automotive and medical applications is actively being explored by researchers and companies throughout the world. Studies on SLM Ti6Al4V micro-lattice structure as core material in sandwich construction showed that this material has significant potential that merits further examination and analysis [ 17 , 18 ].…”

Investigation on Process-Properties Relationship with Mechanical Properties of Lattice-Structured Cellular Material for Lightweight Application

“…In compression test, stress and strain are the important elements to plot the graph to determine the ultimate strength, yield strength, elastic limit and for some material's compressive strength. Numerous studies have utilized compression test to measure the strength [7,11]. Ang et al [12] studied the effect of fused deposition modelling (FDM) process parameters to the mechanical strength of tissue engineering scaffold by compression test.…”