scholarly journals Mechanical Properties of Pack Carburized SCM 420 Steel Processed Using Natural Shell Powders and Extended Carburization Time

Crystals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1136
Author(s):  
Ramli ◽  
Chung-Chun Wu ◽  
Adel Shaaban
Keyword(s):  
Mechanical Properties ◽  
Carbon Content ◽  
Surface Hardness ◽  
Water Quenching ◽  
Coconut Shell ◽  
Carburized Layer ◽  
Coconut Shell Powder ◽  
Shell Powder ◽  
Conch Shell

The feasibility of using coconut shell powder (CSP) and dog conch shell powder (DCSP) as carburizing media in the pack carburization of SCM 420 steel was investigated. The carbon content and surface hardness of the carburized specimens prepared with different CSP:DCSP ratios and carburizing durations were examined and compared. A CSP:DCSP ratio of 60%:40% and an extended carburizing time of 12 h were found to increase the carbon content of the carburized specimens to 1.14 ± 0.007 wt%. Furthermore, the surface hardness was significantly improved to 961.3 ± 4.918 HV following water quenching. Finally, the thickness of the carburized layer of the quenched specimens increased by around 2.5 times as the carburizing duration was increased from 3 to 12 h.

scholarly journals Effect of Coconut Shell Powder as Filler on the Mechanical Properties of Coir-polyester Composites

2017 ◽  
Vol 5 (4) ◽  
pp. 75-82 ◽  
Author(s):  
Md. Tangimul Islam ◽  
Subrata Chandra Das ◽  
Joykrisna Saha ◽  
Debasree Paul ◽  
M. Tauhidul Islam ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Coconut Shell ◽  
Polyester Composites ◽  
Coconut Shell Powder ◽  
Shell Powder

Mechanical Characterization of Areca Fiber and Coconut Shell Powder Reinforced Hybrid Composites

2021 ◽  
Vol 1034 ◽  
pp. 61-71
Author(s):  
G. Kishore Chowdari ◽  
D.V.V. Krishna Prasad
Keyword(s):  
Hybrid Composites ◽  
Flexural Modulus ◽  
Surface Hardness ◽  
Weight Ratio ◽  
Tensile Modulus ◽  
Coconut Shell ◽  
Fiber Loading ◽  
The Impact ◽  
Coconut Shell Powder ◽  
Shell Powder

The use of natural fibers in polymer matrix composites are increases because of their advantages like good stiffness, strength, environmental friendly, low cost and biodegradable. In the present investigation, hybrid fiber reinforced composites are fabricated using areca fiber and coconut shell powder (CSP) as reinforcement in epoxy resin. Unidirectional areca fiber and CSP reinforced epoxy composites were fabricated by varying the overall fiber loading (10, 20, 30, and 40 wt.%) and different weight ratios of areca fiber and CSP (1:1, 1:3, and 3:1). Effect of fiber loading and weight ratio on mechanical properties like tensile strength, tensile modulus, flexural strength, flexural modulus, interlaminar shear strength (ILSS), impact energy and surface hardness of hybrid composites were evaluate experimentally. All the hybrid composite samples fabrication and mechanical testing was done as per ASTM standards. The experimental investigation reveals that the tensile, flexural and ILSS properties show their maximum values at 30 wt.% of fiber loading with areca fiber and CSP weight ratio as 1:1. From the impact and hardness results it has been found that composites with areca fiber and CSP weight ratio as 3:1 and 1:1 respectively shows their maximum values at 40 wt.% of fiber loading. Interfacial analysis of the hybrid composites were also observed by using scanning electron microscope (SEM).

Morphology and mechanical properties of coconut shell powder-filled untreated cornhusk fibre-unsaturated polyester composites

Polymer ◽  
2021 ◽  
Vol 222 ◽  
pp. 123657
Author(s):  
Nasmi Herlina Sari ◽  
Suteja Suteja ◽  
Ahmad Fudholi ◽  
Ahmad Zamzuriadi ◽  
Emmy Dyah Sulistyowati ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Unsaturated Polyester ◽  
Coconut Shell ◽  
Polyester Composites ◽  
Coconut Shell Powder ◽  
Shell Powder ◽  
Morphology And Mechanical Properties

scholarly journals PENGARUH UKURAN SERBUK TEMPURUNG KELAPA SEBAGAI PENGISI KOMPOSIT POLIESTER TAK JENUH TERHADAP SIFAT MEKANIK DAN PENYERAPAN AIR

2013 ◽  
Vol 2 (4) ◽  
pp. 31-37
Author(s):  
Falma Irawati Sijabat ◽  
Jenmorisdo Saragih ◽  
Halimatuddahliana
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Water Absorption ◽  
Unsaturated Polyester ◽  
Coconut Shell ◽  
Absorption Test ◽  
Polyester Matrix ◽  
Coconut Shell Powder ◽  
Shell Powder

Coconut Shell Powder (CSP) was derived from industrial Making Anti-Mosquito can potentially be used as filler in materials composite. The investigation on the utilization of CSP as filler in a polyester matrix has been done with the purpose to obtain the best CSP fillers size in Unsaturated Polyester (UPR) composites in producing the best mechanical properties such as tensile strength, impact strength  and water absorption. In this study, UPR was mixed with CSP at the sizes 50 mesh, 70 mesh and 100 mesh with comparison of CSP: Unsaturated Polyester 20:80 (w/w) by using hand lay-up method. The result of mechanical properties showed that, at a ratio of CSP: PE (20:80), the maximum tensile strength obtained is 42.558 MPa with the size of CSP 70 mesh. The test on impact strength was found that the increasing only occured with the size of CSP 100 mesh at 6083.47 J/m2. For absorption test, the highest water absorption occured at the first day,  water absorption increased with increasing the amount of filler and the most CSP  absorbed  water at 70 mesh.

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