Experimental and numerical investigation on fatigue damage in micro-lattice materials by Digital Volume Correlation and μCT-based finite element models

A Recent Review of the Sandwich-Structured Composite Metamaterials: Static and Dynamic Analysis

“…Due to its main features, including an increase in bandwidth, radiated power, directivity, and control over the direction of electromagnetic radiation, metamaterial has attracted considerable attention over the past ten years in a specific field. A wide range of applications, designs, functions, and applications of metamaterials can be found, covering social safety, detectors, high-frequency battlefield communication, improved ultrasonic sensors, solar power management, high-gain antennas, and remote aerospace applications [79,80].…”

“…A numerical and experimental study was conducted on the proposed metamaterial to determine its mechanical properties and deformation behavior. A validated finite element model was used in parametric research to examine the effect of wedge-shaped parts' sizes, angles, and stiffnesses [82]. Dong Han et al (2022) designed, fabricated and studied auxetic tubular lattice metamaterial structures using experimental and finite element methods to determine their mechanical properties [83].…”

Hydrogen embrittlement in micro-architectured materials

“…Using the available data, we calibrated the material's true stress-strain response in the absence of hydrogen (C tot = 0) in the form of Eq. (17), see Table 1. However, the material properties listed in Table 1 are insufficient for calibration of the material failure because notch radius and consequently stress triaxiality affect the maximum strength of the sample.…”

“…[7], [8], [9], [10] and [11], and (more recently) under tension, e.g. [12], [13], [14], [15], [16] and [17]. Most of these failure-related studies highlighted the role of manufacturing imperfections, and some thoroughly investigated the topic, e.g.…”

Response of an aluminium Schwarz triply periodic minimal surface lattice structure under constant amplitude and random fatigue

“…The fatigue behaviour of metallic lattices under loading conditions different from compression-compression has been studied to a lesser extent. Only a limited number of works addressing this issue for strut based lattices can be found [37][38][39], showing that the effect of stress ratio on the fatigue limit is different from base material behaviour and generally observing a lower sensitivity to mean stress. However, a comprehensive understanding about the influence of the stress ratio on the fatigue strength of TPMS structures and their fatigue failure mechanisms is still missing.…”