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

2019 ◽  
Vol 3 (2) ◽  
pp. 40 ◽  
Author(s):  
Bijan Samali ◽  
Saeed Nemati ◽  
Pezhman Sharafi ◽  
Farzaneh Tahmoorian ◽  
Farshad Sanati
Keyword(s):  
Building Construction ◽  
Shear Behaviour ◽  
Structural Performance ◽  
Tensile Behaviour ◽  
Composite Panels ◽  
Structural Members ◽  
The Past ◽  
Pu Foam ◽  
Foam Filled ◽  
Filled Composite

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.

scholarly journals Development of an Innovative Modular Foam-Filled Panelized System for Rapidly Assembled Postdisaster Housing

Buildings ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 97 ◽  
Author(s):  
P. Sharafi ◽  
S. Nemati ◽  
B. Samali ◽  
M. Ghodrat
Keyword(s):  
Sandwich Panel ◽  
High Density ◽  
Building Construction ◽  
Structural Performance ◽  
Modular Construction ◽  
Structural Walls ◽  
Pu Foam ◽  
Load Carrying ◽  
Foam Filled ◽  
American Society

In this paper, the development process of a deployable modular sandwich panelized system for rapid-assembly building construction is presented, and its structural performance under some different action effects is investigated. This system, which includes an innovative sandwich panel and its integrated connections, can be used as structural walls and floors in quickly-assembled postdisaster housing, as well as load-bearing panels for prefabricated modular construction and semipermanent buildings. Panels and connections are composed of a pneumatic fabric formwork, and two 3D high-density polyethylene (HDPE) sheets as the skins, filled with high-density rigid polyurethane (PU) foam as the core. HDPE sheets manufactured with a studded surface considerably enhance stress distribution, buckling performance, and delamination strength of the sandwich panel under various loading conditions. The load-carrying behavior of the system in accordance with some American Society for Testing and Materials (ASTM) standards is presented here. The results show the system satisfies the codes’ criteria regarding semipermanent housing.

scholarly journals Development of an Innovative Modular Foam-Filled Panelised System for Rapidly Assembled Post Disaster Housing

2018 ◽  
Author(s):  
Pezhman Sharafi ◽  
Saeed Nemati ◽  
Bijan Samali ◽  
Maryam Ghodrat
Keyword(s):  
Sandwich Panel ◽  
High Density ◽  
Structural Performance ◽  
Modular Construction ◽  
Structural Walls ◽  
Permanent Housing ◽  
Pu Foam ◽  
Load Carrying ◽  
Foam Filled ◽  
Post Disaster

In this paper the development process of a deployable modular sandwich panelized system for rapid assembly building construction is presented, and its structural performance under some different action effects is investigated. This system, which includes an innovative sandwich panel and its integrated connections, can be used as structural walls and floors in quickly assembled post-disaster housing, as well as load bearing panels for pre-fabricated modular construction and semi-permanent buildings. Panels and connections are composed of a pneumatic fabric formwork, and two 3-D high-density polyethylene (HDPE) sheets as the skins, filled with high-density rigid Polyurethane (PU) foam as the core. HDPE sheets manufactured with a studded surface considerably enhance the stress distribution, buckling performance and delamination strength of the sandwich panel under various loading conditions. The load-carrying behaviour of the system in accordance with some ASTM standards is presented here. The results show the system satisfies the codes criteria regarding semi-permanent housing.

Reuse System of Building Steel Structures - Structural Performance of Reusable Members and Practical Examples

2012 ◽  
Vol 517 ◽  
pp. 513-521 ◽  
Author(s):  
Masanori Fujita
Keyword(s):  
Life Cycle ◽  
Steel Structures ◽  
Structural Member ◽  
Structural Performance ◽  
Structural Members ◽  
Crucial Element ◽  
Environmental Burden ◽  
The Past ◽  
Steel Members ◽  
Reuse System

Longevity, reuse and recycle can be effective in reducing environmental burden in the life cycle of building steel structures. Longevity is the most crucial element in reducing the environmental burden of building steel structures. Nevertheless, there are always a number of buildings that need to be demolished for physical, architectural, economic, and social reasons. When such building steel structures have been demolished in the past, their structural members have been scrapped for recycling. Steel, by nature, is the only type of structural member that can be fabricated. Even without special joints that facilitate demolition work, steel members can be reused after minor fabrication procedures such as cutting, drilling, and welding. In this paper we discuss structural performance of reusable members and practical examples using reusable members.

Crush Response of Polyurethane Foam-Filled Aluminium Tube Subjected to Axial Loading

2014 ◽  
Vol 875-877 ◽  
pp. 534-541 ◽  
Author(s):  
Chawalit Thinvongpituk ◽  
Nirut Onsalung
Keyword(s):  
Energy Absorption ◽  
Polyurethane Foam ◽  
Testing Machine ◽  
Axial Loading ◽  
Asymmetric Mode ◽  
Pu Foam ◽  
Universal Testing ◽  
Collapse Mode ◽  
Empty Tube ◽  
Foam Filled

In this paper, the experimental investigation of polyurethane (PU) foam-filled into circular aluminum tubes subjected to axial crushing was presented. The purpose of this study is to improve the energy absorption of aluminium tube under axial quasi-static load. The aluminium tube was made from the AA6063-T5 aluminium alloy tubes. Each tube was filled with polyurethane foam. The density of foam was varied from 100, 150 and 200 kg/mP3P including with empty tube. The range of diameter/thickness (D/t) ratio of tube was varied from 15-55. The specimen were tested by quasi-static axial load with crush speed of 50 mm/min using the 2,000 kN universal testing machine. The load-displacement curves while testing were recorded for calculation. The mode of collapse of each specimen was analyzed concerning on foam density and the influence of D/t ratio. The results revealed that the tube with foam-filled provided significantly increment of the energy absorption than that of the empty tube. While the density of foam and D/t ratios increase, the tendency of collapse mode is transformed from asymmetric mode to concertina mode.

Modeling the Tensile Behaviour of a SiC/SiC Composite by Master Curves

2000 ◽  
Author(s):  
J. Shi
Keyword(s):  
Master Curve ◽  
Ceramic Matrix Composites ◽  
Test Material ◽  
Tensile Behaviour ◽  
Matrix Composites ◽  
Test Results ◽  
Master Curves ◽  
The Past ◽  
Test Parameters ◽  
Tensile Data

Scatter in test results is common for relatively brittle materials such as ceramic matrix composites. The scatter may come from differences in material processing conditions, specimen machining/handling and from variations in test parameters for nominally the same test material. Large scatter in test results makes material modeling difficult. In the past, master curve concepts have been proposed to reduce scatter in tensile data and to interpret fatigue/creep results. In this paper, one such concept is examined in detail by applying it to the recent tensile test results of a SiC/SiC composite. It was found that the way to construct master curves did not apply to the CMC studied and thus a new master curve was developed to better represent the tensile data. In addition, the test data were analysed statistically based on the new master curve.

Free vibration and buckling of foam-filled composite corrugated sandwich plates under thermal loading

2017 ◽  
Vol 172 ◽  
pp. 173-189 ◽  
Author(s):  
Bin Han ◽  
Ke-Ke Qin ◽  
Qian-Cheng Zhang ◽  
Qi Zhang ◽  
Tian Jian Lu ◽  
...  
Keyword(s):  
Free Vibration ◽  
Thermal Loading ◽  
Sandwich Plates ◽  
Foam Filled ◽  
Filled Composite

Mechanical performance of polyester pin-reinforced foam filled honeycomb sandwich panels

2018 ◽  
Vol 25 (4) ◽  
pp. 797-805 ◽  
Author(s):  
R.S. Jayaram ◽  
V.A. Nagarajan ◽  
K.P. Vinod Kumar
Keyword(s):  
Mechanical Properties ◽  
Mechanical Performance ◽  
Flexural Rigidity ◽  
Sandwich Panels ◽  
Interfacial Strength ◽  
Structural Performance ◽  
Experimental Investigations ◽  
Honeycomb Sandwich ◽  
Foam Filled ◽  
Pin Reinforcement

Abstract Honeycomb sandwich panels entice continuously enhanced attention due to its excellent mechanical properties and multi-functional applications. However, the principal problem of sandwich panels is failure by face/core debond. Novel lightweight sandwich panels with hybrid core made of honeycomb, foam and through-thickness pin was developed. Reinforcing polyester pins between faces and core is an effectual way to strengthen the core and enhance the interfacial strength between the face/core to improve the structural performance of sandwich panels. To provide feasibility for pin reinforcement, honeycomb core was pre-filled with foam. Mechanical properties enhancement due to polyester pinning were investigated experimentally under flatwise compression, edgewise compression and flexural test. The experimental investigations were carried out for both “foam filled honeycomb sandwich panels” (FHS) and “polyester pin-reinforced foam filled honeycomb sandwich panels” (PFHS). The results show that polyester pin reinforcement in foam filled honeycomb sandwich panel enhanced the flatwise, edgewise compression and flexural properties considerably. Moreover, increasing the pin diameter has a larger effect on the flexural rigidity of PFHS panels. PFHS panels have inconsequential increase in weight but appreciably improved their structural performance.

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