Utilization of volcanic amorphous aluminosilicate rocks (perlite) as alternative materials in lightweight composites

2019 ◽  
Vol 165 ◽  
pp. 47-54 ◽  
Author(s):  
Marya Raji ◽  
Souad Nekhlaoui ◽  
Iz-Eddine El Amrani El Hassani ◽  
El Mokhtar Essassi ◽  
Hamid Essabir ◽  
...  
Keyword(s):  
Alternative Materials ◽  
Amorphous Aluminosilicate ◽  
Lightweight Composites

Possibilities of Using Alternative Materials as a Substitute Binder or Filler into Composites

2015 ◽  
Vol 1105 ◽  
pp. 31-35 ◽  
Author(s):  
Nadežda Števulová ◽  
Ivana Schwarzova ◽  
Viola Hospodarova ◽  
Jozef Junak ◽  
Marcela Ondova ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Coal Fly Ash ◽  
Steel Slag ◽  
Recycled Concrete ◽  
Partial Replacement ◽  
Alternative Materials ◽  
Activated Coal ◽  
Hemp Fibres ◽  
Lightweight Composites

This article reports on the possibilities of using selected alternative materials like hemp fibres, MgO-cement, recycled concrete, fly ash and steel slag as binder or filler replacement in composite materials in civil engineering production. These binder or filler substitutes were mixed into composites and their compressive strength was tested. The paper is divided into four parts providing the results of experiments. In first part strength parameters of lightweight composites based on natural fibres (hemp hurds) and alternative binder (MgO-cement) are presented. Compressive strength values of concrete samples with partial replacement of cement with mechanochemically activated coal fly ash are given. The third and forth part is aimed to utilization of recycled concrete and steel slag as a natural aggregate replacement in concrete mixture for purpose of structural concrete and surface roads.

Utilization of alternative materials in lightweight composites

2012 ◽  
Vol 34 ◽  
pp. 116-119 ◽  
Author(s):  
Lucia Kidalova ◽  
Nadezda Stevulova ◽  
Eva Terpakova ◽  
Alena Sicakova
Keyword(s):  
Alternative Materials ◽  
Lightweight Composites

Performance study of RTV-2 Silicone Rubber Material For Soft Actuator by Experimental and Numerical methods: The Effect of Inflation Pressure and Wall Thickness

2020 ◽  
Vol 17 (1) ◽  
pp. 7524-7532 ◽  
Author(s):  
Deepak D. ◽  
Nitesh Kumar ◽  
Shreyas P. Shetty ◽  
Saurabh Jain ◽  
Manoj Bhat
Keyword(s):  
Numerical Methods ◽  
Wall Thickness ◽  
Silicone Rubber ◽  
Inflation Pressure ◽  
Performance Study ◽  
Rubber Material ◽  
Soft Actuator ◽  
Alternative Materials ◽  
Load Carrying ◽  
Influential Parameters

The expensive nature of currently used materials in the soft robotic industry demands the consideration of alternative materials for fabrication. This work investigates the performance of RTV-2 grade silicone rubber for fabrication of a soft actuator. Initially, a cylindrical actuator is fabricated using this material and its performance is experimentally assessed for different pressures. Further, parametric variations of the effect of wall thickness and inflation pressure are studied by numerical methods. Results show that, both wall thickness and inflation pressure are influential parameters which affect the elongation behaviour of the actuator. Thin (1.5 mm) sectioned actuators produced 76.97% more elongation compared to thick sectioned, but the stress induced is 89.61 % higher. Whereas, the thick sectioned actuator (6 mm) showed a higher load transmitting capability. With change in wall thickness from 1.5 mm to 6 mm, the elongation is reduced by 76.97 %, 38.35 %, 21.05 % and 11.43 % at pressure 100 kPa, 75 kPa, 50 kPa and 25 kPa respectively. The induced stress is also found reduced by 89.61 %, 86.66 %, 84.46 % and 68.68 % at these pressures. The average load carrying capacity of the actuator is found to be directly proportional to its wall thickness and inflation pressure.

PROJECT 70/PROJECT 7000 STAINLESS TYPE 203

Alloy Digest ◽  
1997 ◽  
Vol 46 (8) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Magnetic Permeability ◽  
Stainless Steels ◽  
Heat Treating ◽  
High Manganese ◽  
Aisi Type ◽  
Alternative Materials

Abstract Project 70 and Project 7000 Type 203 stainless steels are alternative materials to AISI Type 303, resulfurized stainless steel having improved machinability. High manganese and copper are substituted for some nickel resulting in a stable austenitic structure having low magnetic permeability. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-505. Producer or source: Carpenter. Originally published May 1989, revised August 1997.

Optimization, Alternative Materials and Improvements in Body Armor Shields

2007 ◽  
Author(s):  
R. C. Batra ◽  
G. M. Zhang ◽  
J. Zheng ◽  
G. Gopinath
Keyword(s):  
Body Armor ◽  
Alternative Materials

scholarly journals Optimization of the Production Process and Product Quality of Titanate Nanotube–Drug Composites

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1406 ◽  
Author(s):  
Yasmin Ranjous ◽  
Géza Regdon ◽  
Klára Pintye-Hódi ◽  
Tamás Varga ◽  
Imre Szenti ◽  
...  
Keyword(s):  
Scanning Calorimetry ◽  
Good Solubility ◽  
Composite Formation ◽  
Alternative Materials ◽  
High Volatility ◽  
Ft Ir ◽  
Fast Disintegrating Tablets ◽  
As Solubility ◽  
Properties Of Composites

Recently, there has been an increasing interest in the application of nanotubular structures for drug delivery. There are several promising results with carbon nanotubes; however, in light of some toxicity issues, the search for alternative materials has come into focus. The objective of the present study was to investigate the influence of the applied solvent on the composite formation of titanate nanotubes (TNTs) with various drugs in order to improve their pharmacokinetics, such as solubility, stability, and bioavailability. Composites were formed by the dissolution of atenolol (ATN) and hydrochlorothiazide (HCT) in ethanol, methanol, 0.01 M hydrochloric acid or in ethanol, 1M sodium hydroxide, dimethylformamide (DMF), dimethyl sulfoxide (DMSO), respectively, and then they were mixed with a suspension of TNTs under sonication for 30 min and vacuum-dried for 24 h. The structural properties of composites were characterized by SEM, TEM, FT-IR, differential scanning calorimetry (DSC), thermogravimetric (TG) analysis, and optical contact angle (OCA) measurements. Drug release was determined from the fast disintegrating tablets using a dissolution tester coupled with a UV–Vis spectrometer. The results revealed that not only the good solubility of the drug in the applied solvent, but also the high volatility of the solvent, is necessary for an optimal composite-formation process.

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