Influence of core density, core thickness, and rigid inserts on dynamic characteristics of sandwich panels with polyurethane foam as core

Sharma, Ramesh S.; Raghupathy, V. P.

doi:10.1177/0731684410370904

Cited by 7 publications

(7 citation statements)

References 10 publications

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“…Also, the load‐carrying ability of sandwich specimens with rigid inserts was found to be increased substantially. Another study was carried out by a similar research group to study the dynamic behavior of sandwich specimens with PUF rigid inserts . The research mainly focused on the effects of core density, core thickness and rigid inserts on the dynamic response of sandwich specimens mainly in terms of the fundamental frequency for different boundary conditions.…”

Section: Puf Core Sandwich Structuresmentioning

confidence: 99%

A review on recent advances in sandwich structures based on polyurethane foam cores

et al. 2020

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Sandwich composites with a polyurethane foam (PUF) core have become a versatile set of materials with applications ranging from basic construction elements to advanced engineering materials. This diverse range of applications has provided these sandwich materials with a distinctive position in today's engineering world. This review focuses on the broad research that has been carried out on PUF core‐based sandwich composites over the years—especially in the last decade. Thorough details have been presented focusing on basic PUF core sandwich structures, advanced PUF core sandwich composites with different kinds of reinforcements and complex structures such as hybrid sandwich panels. All the research presented here has been categorized carefully, such as the types of materials used in various studies, the types of reinforcements and testing techniques used, including mechanical, electrical, dynamic, thermal and acoustic methods etc. Comparisons have also been made based on similar materials, similar testing procedures and similar application areas. Research areas have been highlighted by giving a deep insight into the most promising research, manufacturing techniques and improvement procedures. Major consumption areas and application sectors for PUF core sandwich composites have also been discussed in this review. Finally, conclusions have been made based on the results found from a literature investigation.

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Section: Puf Core Sandwich Structuresmentioning

confidence: 99%

A review on recent advances in sandwich structures based on polyurethane foam cores

et al. 2020

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“…Nonlinear stiffness and viscoelastic parameters of flexible polyurethane foams could be obtained by a vibration test and compression test [19,20]. However, beyond that, polyurethane foam also was often used as core material to make sandwich board [22,23] and honeycomb board structures [24], because of its good vibration absorption and isolation performance. To understand the vibration characteristics of foam materials, the researchers studied the density, strength, and viscoelasticity of foam materials [25,26].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Compression Mechanical Properties of Rigid Polyurethane Foam Treated under Random Vibration Condition: An Experimental and Numerical Simulation Study

Qiu

2019

Materials

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The mechanical failure properties of rigid polyurethane foam treated under random vibration were studied experimentally and by numerical simulation. The random vibration treatments were carried out in the frequency range of 5–500 Hz, 500–1000 Hz, and 1000–1500 Hz, respectively. The influence of the vibration frequency, mass block and acceleration on the mechanical performance of rigid polyurethane foam was further investigated by compression testing. The experimental results showed that the compression performance and energy absorption of foams decreased the least between 500–1000 Hz. In addition, in the 5–500 Hz range, the reduction rate of compression performance and energy absorption increased with the increase of the vibration mass block and acceleration. The resulting simulation indicated that the deformation degree of the sample was the most serious under the condition of 5–500 Hz. With the increase of deformation, the damage of the sample during the vibration process increased, which led to the decrease of compression property and energy absorption of rigid polyurethane foam. This further explained the variation mechanism of the compression test performance.

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“…Then, after the calibration, the use of the coherent elements together with a linear softening law provided in the core a pattern of strain variation similar to the one obtained experimentally. Sharma et al [67] studied all vibration modes of composite panels to ensure that debonding between facings and core in the through-thickness vibration mode does not occur during service. They conducted an experimental modal analysis on composite panels of different densities and core thicknesses under different boundary conditions and evaluated the corresponding mode shapes and modal damping.…”

Section: Delamination and Debondingmentioning

confidence: 99%

“…The feasibility of using the connectors and SFRSCC on the outer layers is studied through a series of pull-out tests where failure modes and load capacity of the connections are analysed. Table 4 shows a summary of references [57,58,[64][65][66][67][68][69][70]. Mostafa et al [69] presented semicircular shear keys to improving the shear performance and skin-core peeling resistance for foam-filled composite panels with the core.…”

Section: Delamination and Debondingmentioning

confidence: 99%

See 1 more Smart Citation

Structural Performance of Polyurethane Foam-Filled Building Composite Panels: A State-Of-The-Art

et al. 2019

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Composite panels with polyurethane (PU) foam-core and facing materials, such as gypsum, engineered wood or some composite materials, are being used as structural members in building construction. This paper reviews and summarises major research developments, and provides an updated review of references on the structural performance of foam-filled building composite panels from 1998 to 2017. The review revealed that previous studies on the structural performance of foam-filled building composite panels could be categorised into five themes; namely, energy absorption and dynamic behaviour; bending and shear behaviour, edgewise and flatwise compressive/tensile behaviour; delamination/deboning issues; and finally some miscellaneous issues. These categories comprise approximately 30%, 40%, 11%, 11% and 8% of related studies over the last two decades, respectively. Also, over the past five years, the number of relevant studies has increased by ~400% relative to the previous similar periods, indicating the attention and focus of researchers to the importance of the structural performance of foam-filled composite panels.

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Influence of core density, core thickness, and rigid inserts on dynamic characteristics of sandwich panels with polyurethane foam as core

Cited by 7 publications

References 10 publications

A review on recent advances in sandwich structures based on polyurethane foam cores

A review on recent advances in sandwich structures based on polyurethane foam cores

Investigation on Compression Mechanical Properties of Rigid Polyurethane Foam Treated under Random Vibration Condition: An Experimental and Numerical Simulation Study

Structural Performance of Polyurethane Foam-Filled Building Composite Panels: A State-Of-The-Art

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