Modelling of Polydomain Smart Materials

1994 ◽  
Vol 360 ◽  
Author(s):  
Yongsik Yu ◽  
Alexander Roytburd
Keyword(s):  
Physical Properties ◽  
Electric Fields ◽  
Smart Materials ◽  
Practical Importance ◽  
Thermodynamic Theory ◽  
Domain Formation ◽  
Domain Structures ◽  
Layer Composite ◽  
Mechanical And Physical Properties

AbstractPolydomain materials with periodic (modulated) domain structures are of potential practical importance since they can possess unique and desirable mechanical and physical properties. A twin related domain formation can be a result of constrained structural, ferroelectric or ferromagnetic transformations. The thermodynamic theory on the deformation of layer composites containing a polydomain (polytwin) ferroelectric component is analyzed. The deformation of the layer composite under different directional electric fields and constraints is calculated.

scholarly journals Strength Performance and Dimensional Stability of Peeled Bamboo - Fiberglass Composite (PBFC) from Buluh Betong

2014 ◽  
Vol 2 (1) ◽  
pp. 16-22
Author(s):  
Mohd Aminuddin Che Haron ◽  
Suhaimi Muhammed ◽  
Abdul Hamid Saleh
Keyword(s):  
Physical Properties ◽  
Water Absorption ◽  
Epoxy Resin ◽  
Dimensional Stability ◽  
Thickness Swelling ◽  
European Standard ◽  
Strength Performance ◽  
Layer Composite ◽  
Mechanical And Physical Properties ◽  
Fiberglass Composite

Bamboo is considered as environmentally and eco-friendly material compared to hardwood and nowadays bamboo veneer is getting very popular in the market. Bamboo veneer is suitable for many modern designs. The alternate layers of veneer bamboo (3 and 5 layers) were combined with fiberglass by using Epoxy resin (2% hardener) as bonding agent to produce PBFC at different pressure. Panels produced were assessed for the mechanical and physical properties such as MOE and MOR, thickness swelling (TS), and water absorption (WA) in accordance with the European Standard. Results revealed that strength performance of board improved with increasing pressure. Thickness swelling and water absorption values were much lower for the 5 layer composite Thus such findings revealed that bamboo veneer from Buluh betong possess great potential for the manufacture of bio-composite products.

PEMANFAATAN KAYU AKASIA MANGIUM (Acacia mangium Willd) UNTUK MEBEL

2012 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Djoko Purwanto
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Physical Properties ◽  
Treatment Process ◽  
Acacia Mangium ◽  
Physical And Mechanical Properties ◽  
Wood Fibers ◽  
Test Parameters ◽  
Mechanical And Physical Properties ◽  
Scale Scores

Timber Acacia mangium (Acacia mangium, Willd) for Furniture. The study aims to determine the mechanical and physical properties and the decorative value (color and fiber) wood of acacia mangium with using finishing materials. This type of finishing material used is ultran lasur natural dof ,ultran lasur classic teak, aqua politur clear dof, aqua politur akasia dan aqua politur cherry. After finishing the wood is stored for 3 months. Test parameters were observed, namely, physical and mechanical properties of wood, adhesion of finishing materials, color and appearance of the fiber, and timber dimensions expansion. The results showed that the mechanical physical properties of acacia wood qualified SNI. 01-0608-89 about the physical and mechanical properties of wood for furniture, air dry the moisture content from 13.78 to 14.89%, flexural strength from 509.25 to 680.50 kg/cm2, and compressive strength parallel to fiber 342.1 - 412.9 kg/cm2. Finishing the treatment process using five types of finishing materials can increase the decorative value (color and fiber) wood. Before finishing the process of acacia mangium wood has the appearance of colors and fibers and less attractive (scale scores 2-3), after finishing acacia wood fibers have the appearance of colors and interesting and very interesting (scale 4-5).Keywords: mangium wood, mechanical properties, decorative value, finishing, furniture.

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