Microstructural and Compressive Deformation Behavior of Aluminum-Foam-Filled Sections

Cheng

et al. 2022

Surface Engineering

In the present study, hybrid closed-cell foams consisting of two materials with different ductilities were manufactured to improve the energy absorption capacity. The mechanical characteristics, deformation modes and energy absorption capacities of the foams were investigated. Furthermore, the energy absorption mechanisms of the hybrid foams were analysed. The results demonstrated a significant synergistic effect between the foams and coating with different ductilities during deformation. Their combination increased the densification strain and improved the energy absorption capacity of the samples. Among the specimens investigated, the Al/Zn-Cu(A) foam showed the best densification strain (0.75) and presented superior energy absorption capacities (energy absorption capacity per unit volume (U v ) = 4.5 J cm -3 ; energy absorption capacity per unit mass (U m ) = 8.4 J g -1 ). The intrinsic mechanism of energy absorption optimisation is a combination of the advantages of brittle and ductile deformation modes.

Section: Materials Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improved energy absorption capacity of closed-cell aluminium foams by electroplating

Cheng

et al. 2022

Surface Engineering

“…Luo et al [ 22 ], through experimental research, concluded that, on the premise of the same absorbed energy, foam-filled metal steel tubes could reduce the volume and mass required by energy-absorbing members compared with pure steel tubes. To explore the response of the foam-metal structure under the impact load, Dipen Kumar Rajak et al [ 23 ] and Patel et al [ 24 ] studied the crashworthiness and energy absorption performance of the foam-filled thin-walled steel tube under different strain rates. The results display that the strain rate increases linearly with the platform stress and energy absorption.…”

Section: Introductionmentioning

confidence: 99%

Study on Quasi-Static Axial Compression Performance and Energy Absorption of Aluminum Foam-Filled Steel Tubes

Wang

Shao

2023

Materials

To study the axial compression performance of aluminum foam-filled steel tube and empty steel tube as objects, such tubes are studied in this paper, which explores the carrying capacity and deformation behavior of aluminum foam-filled steel tube with different lengths under a quasi-static axial load through experimental research. The carrying capacity, deformation behavior, stress distribution, and energy absorption characteristics of empty steel tubes and foam-filled steel tubes are compared through finite element numerical simulation. The results indicate that, compared with the empty steel tube, the aluminum foam-filled steel tube still presents a large residual carrying capacity after the axial force exceeds the ultimate load, and the whole compression process reflects steady-state compression. In addition, the axial and lateral deformation amplitudes of the foam-filled steel tube decrease significantly during the whole compression process. After filling the foam metal, the large stress area decreases and the energy absorption capacity improves.

“…Chatterjee et al (2017) used a Grey fuzzy relational analysis and TOPSIS multi-criteria decision method for the selection of cotton Fabric values (Panchal et al, 2019;Chakraborty et al, 2018). Patel et al (2018) analyzed the microstructural and deformation behavior of Al-foam filled section and A2024-SiC-ZrSiO4 metal matrix composites.…”

mentioning

confidence: 99%

Selection of WEDM parameters to measure the performance and productivity of die steel grade D3 using GRA and fuzzy logic system

Kumar

Dhanabalan²

2019

Purpose The purpose of this paper is to examine the performance parameters of WEDM to improve the productivity and material removal rate (MRR) with a high surface finish of high chromium-high carbon dies steel. Design/methodology/approach The experiments were performed on AGIE CUT 220 CNC WEDM. High chromium-high carbon dies steel (D3) was used in the form of a rectangular plate. The workpiece and the brass wire having diameter ɸ 0.25 mm had linked up with +ve and –ve polarity in the DC power source, respectively. De-ionized water having a conductivity level of 0.6 µs/cm was used as the dielectric medium. The dielectric fluid was flushed from the top and bottom nozzles and material was submerged in the dielectric. Findings The WEDM process parameters for D3 die steel had optimized by using Grey relational analysis method couples with Taguchi method. The optimum solution has been calculated for MRR, cutting speed (Cs), machining time and surface roughness (SR) (Ra value). A fuzzy logic model using Matlab was developed for the prediction of performance parameters, namely MRR, cutting speed (Cs), machining time (M/c time) and SR with respect to changes in input parameters. Research limitations/implications The fuzzy model shows the 96.19 percent accuracy between the experimental values and the predicted values. Practical implications The optimized parameters by multi-parametric optimization method showed considerable improvement in the process and will facilitate the WEDM, tool and die industries, defense and aerospace industries to improve the productivity with the higher surface finish. Originality/value This manuscript represents valid work and the authors have no conflict of interests. The attained optimum outcomes had also been examined through a real experiment and established to be satisfactory.