Impact and post-impact vibration response of protective metal foam composite sandwich plates

Vaidya, Uday; Pillay, Selvum; Bartus, S. D.; Ulven, Chad A.; Grow, Dana T.; Mathew, Biju

doi:10.1016/j.msea.2006.04.114

Cited by 69 publications

(35 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the present work, the parameters determining the size and shape of the unit cell were chosen as ℎ = 5 mm, = 2.5 mm, and = 45 ∘ , which result in Poisson's ratios of V = −0.55 and V = −1.83, respectively, according to (11). Variation of the relative density of the auxetic honeycomb core is realized by adjusting the wall thickness of the unit cell.…”

Section: Auxetic Honeycomb Corementioning

confidence: 99%

See 1 more Smart Citation

A Comparative Study of Ballistic Resistance of Sandwich Panels with Aluminum Foam and Auxetic Honeycomb Cores

Yang

Dong

et al. 2013

Advances in Mechanical Engineering

117

View full text Add to dashboard Cite

An innovative auxetic-cored sandwich panel (AXP) is proposed. Its perforation resistant performance under high-velocity projectile impact was numerically analyzed using the validated finite element simulation techniques and compared with that of the aluminum foam-cored sandwich panel (AFP) of identical dimensions and weight. It has been found that the AXP is far superior to the AFP in ballistic resistance because of the material concentration at the impacted area due to the negative Poisson's ratio (NPR) effect. A parametric study was carried out to investigate the effects of several key parameters, including impact velocity, face and core thicknesses, and core density, on the ballistic resistance of the AXP and AFP. The results show that the ballistic limit and perforation energy of the AXP is greatly affected by these parameters. Meanwhile, the advantages of AXP over AFP being used as ballistic resistant structures are highlighted. The primary outcome of this research is new information on the development and design of advanced ballistic resistant structures containing auxetic materials.

show abstract

Section: Auxetic Honeycomb Corementioning

confidence: 99%

“…It was found that the composite armors with aluminum foam cores perform better than the ones without foam cores under ballistic loadings [9][10][11]. The effects of several key parameters on the ballistic limit and perforation energy of the aluminum foamcored sandwich panels (AFPs) have been analyzed through experiments [12,13].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Ballistic Resistance of Sandwich Panels with Aluminum Foam and Auxetic Honeycomb Cores

Yang

Dong

et al. 2013

Advances in Mechanical Engineering

117

View full text Add to dashboard Cite

show abstract

“…The dynamic properties such as stiffness and damping of the material determine the level of the transmission of vibration through the material (Rivin, 2003). In most applications, a high damping capacity, expressed by the damping ratio, is desired (Vaidya et al, 2006). Our study will provide further understanding of the vibration characteristics and the morphological and physical properties of the HDB based on rigid and flexible cross-linking agents.…”

Section: Introductionmentioning

confidence: 89%

“…Due to this situation, the waste biopolymer foam was used for fabrication into HDB by using a hot compression technique. (Vaidya et al, 2006) used liquid molding techniques to fabricate metal foam with a composite sandwich structure, which is gaining recognition for high performance applications in a variety of commercial and defense industries. Furthermore, mechanical and physical properties of foam were examined in previous studies, and the ability of polymeric foam to absorb the energy of vibration lies behind a wide variety of applications in the automotive industry, for packaging and transportation of fragile goods (Zaretsky, Asaf, Ran, & Aizik, 2012).…”

Section: Introductionmentioning

confidence: 99%

Vibration Transmissibility Study of High Density Solid Waste Biopolymer Foam

Latif¹,

Rus²

2014

J MECH ENG SCI

View full text Add to dashboard Cite

Waste cooking oils are problematic to dispose of especially in the developed countries. In this paper, waste cooking oil is used as raw material to produce foam. The purpose of this study is to develop a high density solid biopolymer foam (HDB) by using a hot compression molding technique based on flexible and rigid cross-linking agents. Physical properties such as scanning electron microscopy (SEM) and vibration characteristics have been studied using a vibration transmissibility test according to the ASTM D3580-95 standard. Different thicknesses were examined during the fabrication of HDB to measure the vibration property. By using the linear vibration theory with a single degree of freedom, the resonance frequency of vibration transmissibility and damping ratios of HDB foam at variation excitation are acquired. The results show that HDB flexible foam gives a higher damping ratio to absorb vibration. The capability of the HDB flexible foam to absorb vibration is greater than rigid HDB. It was observed that no improvement was achieved by increasing the thickness of HDB to vibration transmissibility. Reducing the thickness of the HDB flexible foam gives an increment of a damping ratio up to 36%.

show abstract

“…They emphasized on the degree of damage inflicted on the contact surface, throughthickness and rear surface of the materials when subjected to different impacts. Vaidya et al [13] studied composite sandwich structures composed of aluminum foam core and found it optimal for resisting low-velocity impacts. Similarly several novel sandwiches have been developed with a view to enhance the impact toughness [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Application of Modal Analysis for Evaluation of the Impact Resistance of Aerospace Sandwich Materials

Shahdin

Morlier

Michon

et al. 2011

Advanced Aerospace Applications, Volume 1

View full text Add to dashboard Cite

Impact resistance of different types of composite sandwich beams is evaluated by studying vibration response changes (natural frequency and damping ratio). This experimental works will help aerospace structural engineer in assess structural integrity using classification of impact resistance of various composite sandwich beams (entangled carbon and glass fibers, honeycomb and foam cores). Low velocity impacts are done below the BVID limit in order to detect damage by vibration testing that is hardly visible on the surface. Experimental tests are done using both burst random and sine dwell testing in order to have a better confidence level on the extracted modal parameters. Results show that the entangled sandwich beams have a better resistance against impact as compared to classical core materials.

show abstract

Impact and post-impact vibration response of protective metal foam composite sandwich plates

Cited by 69 publications

References 11 publications

A Comparative Study of Ballistic Resistance of Sandwich Panels with Aluminum Foam and Auxetic Honeycomb Cores

A Comparative Study of Ballistic Resistance of Sandwich Panels with Aluminum Foam and Auxetic Honeycomb Cores

Vibration Transmissibility Study of High Density Solid Waste Biopolymer Foam

Application of Modal Analysis for Evaluation of the Impact Resistance of Aerospace Sandwich Materials

Contact Info

Product

Resources

About