Evaluating a valid fracture specimen geometry for predicting geometry independent SZWc and JSZW value in SA333 Gr. 6 carbon steel material

2015 ◽  
Vol 143 ◽  
pp. 108-120 ◽  
Author(s):  
Sanjeev Saxena ◽  
B.K. Dutta ◽  
G. Sasikala
Keyword(s):  
Carbon Steel ◽  
Specimen Geometry ◽  
Fracture Specimen ◽  
Steel Material

scholarly journals PROSES PEMBUATAN ARANG BATOK KELAPA DAN TULANG SAPI MENGGUNAKAN METODE PIROLISIS SEBAGAI MEDIA CARBURIZING

POROS ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 111
Author(s):  
Tumpal Ojahan Ojahan ◽  
Miswanto Miswanto Miswanto ◽  
Slamtt Sumardi Sumardi
Keyword(s):  
Carbon Steel ◽  
Waste Product ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Main Ingredient ◽  
Fixed Carbon ◽  
Steel Material ◽  
The Media ◽  
Food Needs ◽  
Coconut Shells

Fueled by a rise in food needs as beef and oil into basic commodities has been consumed by thepublic, has lead the increasing of waste the cows and coconut shell. The main ingredient used in thisresearch is a waste product from cow bones and from the remains of the coconut shells from which no orhousehold wastes, that can be processed into charcoal. The purpose of this research which is to enhanceeconomic value of waste from cow bones and coconut shells using combustion pyrolysis system beingcharred (fixed carbon) to produce good quality charcoal, to find out the extent of the temperature used andthe composition of charcoal. The process used in this research is pack carburizing with cow bones andcoconut shell as the media at the temperature 950oC, time detention three hours with variations compositioncharcoal. It can be concluded that charcoal bone across his cattle and charcoal coconut can be used as asource of carbon that might improve the force and hardness in the material carbon steel low (low carbonsteel). The process of pack carburizing can increase the value of % C, against low carbon steel material.

The Initial Life and Short Crack Propagation Life for Low Carbon Steel Based on Dislocation Method

2018 ◽  
Vol 1145 ◽  
pp. 1-7
Author(s):  
Yuan Long Yang ◽  
Qing Chun Meng ◽  
Wei Ping Hu
Keyword(s):  
Fatigue Life ◽  
Carbon Steel ◽  
Crack Propagation ◽  
Low Carbon Steel ◽  
Short Crack ◽  
Low Carbon ◽  
Grain Sizes ◽  
Steel Material ◽  
The Relationship ◽  
Good Agreement

In the paper, the relationship between the grain size and fatigue life are studied. To specify the initial and short crack propagation life of low carbon steel material, three methods are used in the simulation. At first, the K. Tanaka’s model is introduced to calculate the fatigue life of a grain. Then, the Voronoi Diagram is used to generate the microstructure of grains. At last, a criteria to specify the short crack is proposed. Based on these methods, the numerical simulation is conducted. With the help of the process, the grain sizes are generated randomly in order to specify how grain sizes effect fatigue life. The computational results are in good agreement with the experimental data. The results show that the randomness of fatigue life is closely related to the randomness of grain sizes.

Back Propagation Artificial Neural Network Approach to Predict the Flow Stress in Isothermal Tensile Test of Medium Carbon Steel Material

2020 ◽  
Vol 977 ◽  
pp. 163-168
Author(s):  
Mohanraj Murugesan ◽  
Dong Won Jung
Keyword(s):  
Neural Network ◽  
Experimental Data ◽  
Flow Stress ◽  
Carbon Steel ◽  
Back Propagation ◽  
Medium Carbon Steel ◽  
Ann Model ◽  
Medium Carbon ◽  
Average Absolute Relative Error ◽  
Steel Material

Isothermal tensile test of medium carbon steel material was conducted on a computer controlled servo-hydraulic testing machine at the deformation temperatures (923 to 1223 K) and the strain rates (0.05 to 1.0 s-1). Using the experimental data, the artificial neural network (ANN) model with a back-propagation (BP) algorithm was proposed to predict the hot deformation behavior of medium carbon steel material. For the model training and testing purpose, deformation temperature, strain rate and strain data were considered as inputs and in addition, the flow stress data were used a targets. Before running the neural network, the test data were normalized to effectively run the problem and after solving the problem, the obtained results were again converted in order to achieve the actual data. According to the predicted results, the coefficient of determination (R2) and the average absolute relative error between the predicted flow stress and the experimental data were determined as 0.997 and 0.913%, respectively. In addition, by evaluating each test conditions, it was found that the average absolute relative error based on an ANN model varied from 0.55% to 1.36% and moreover, the results showed the better predictability compared with the measured data. Overall, the trained BP-ANN model is found to be much more efficient and accurate by means of flow stress prediction with respect to the experimental data for an entire tested conditions.

scholarly journals Kekerasan Baja Karbon Sedang dengan Variasi Suhu Permukaan Material

Jurnal METTEK ◽  
2018 ◽  
Vol 4 (2) ◽  
pp. 43
Author(s):  
Dwi Payana ◽  
I Made Widiyarta ◽  
Made Sucipta
Keyword(s):  
Mechanical Properties ◽  
Carbon Steel ◽  
Contact Surface ◽  
Room Temperature ◽  
Failure Mechanisms ◽  
Material Surface ◽  
Temperature Variations ◽  
Vickers Indent ◽  
Steel Material ◽  
Hardness Tests

Beban gesek pada permukaan sebuah benda dapat menimbulkan panas pada permukaan kontak benda tersebut. Semakin besar beban gesek yang terjadi, suhu pada permukaan material akan menjadi lebih tinggi. Peningkatan suhu permukaan yang semakin tinggi dapat mempengaruhi sifat mekanis permukaan material dan tentunya dapat berimplikasi terhadap mekanisme kegagalan pada permukaan material tersebut, seperti kegagalan aus dan kegagalan retak. Pada penelitian ini, uji kekerasan dilakukan pada material dengan suhu permukaan tertentu. Permukaan material baja karbon sedang dipanaskan dengan variasi suhu yaitu mulai dari suhu kamar sampai dengan 300ºC, kemudian dilakukan uji Vicker’s. Tingkat kekerasan dan profil indentasi Vickers pada permukaan material dengan variasi suhu tersebut kemudian diinvestigasi. Friction load on the surface of an object can cause heat on the contact surface of the object. The larger the frictional load occurs, the temperature on the surface of the material will become higher. Increased surface temperatures can further affect the mechanical properties of the material surface and can certainly have implications for the failure mechanisms on the surface of the material, such as wear failure and crack failure. In this study, hardness tests were performed on materials with certain surface temperature. The surface of the carbon steel material is being heated with temperature variations ranging from room temperature up to 300ºC, then Vicker's test. The degree of hardness and Vickers indent profile on the surface of the material with the temperature variation is then investigated.

308 Shaping of Spur Gear by Cold Extrusion using Carburized Carbon Steel Material

2005 ◽  
Vol 2005.54 (0) ◽  
pp. 67-68
Author(s):  
Hajime YOSHIDA ◽  
Yozo SAWAKI ◽  
Yoshihisa SAKAIDA ◽  
Tadashi SUZUKI
Keyword(s):  
Carbon Steel ◽  
Spur Gear ◽  
Cold Extrusion ◽  
Steel Material

Corrosion Behavior of Carbon Steel and Stainless Steel Materials under Salt Deposits in Simulated Dry Repository Environments

2002 ◽  
Vol 757 ◽  
Author(s):  
Lietai Yang ◽  
Roberto T. Pabalan ◽  
Lauren Browning ◽  
Darrell S. Dunn
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Relative Humidity ◽  
Multielectrode Array ◽  
Chloride Salt ◽  
Uniform Corrosion ◽  
Salt Deposit ◽  
Steel Material ◽  
Deliquescence Relative Humidity

ABSTRACTIn-situ coupled multielectrode array sensors were used to measure the non-uniform corrosion of carbon steel and stainless steel materials under KCl salt deposit in simulated dry repository environments. It was found that the initiation of non-uniform corrosion occurs at a relative humidity that is 14% lower than the deliquescence relative humidity of the chloride salt. It was found also that once significant corrosion had occurred, the non-uniform corrosion process for the carbon steel material under the salt deposit continues at relative humidities as low as 27%.

The effect of material and flushing water type on urine scale formation

2015 ◽  
Vol 72 (11) ◽  
pp. 2027-2033 ◽  
Author(s):  
Shervin Hashemi ◽  
Mooyoung Han ◽  
Tschungil Kim
Keyword(s):  
Carbon Steel ◽  
Formation Process ◽  
Scale Formation ◽  
Water Type ◽  
Factors Affecting ◽  
New Methods ◽  
Steel Material

One of the important challenges with current sanitation practices is pipe blockage in urinals caused by urine scale formation. Urinal material and flushing water type are the two most important factors affecting scale formation. This paper examines the scale formation process on different materials which are commonly used in urinal manufacturing and exposed to different urine-based aqua cultures. This study shows that urine scale formation is the greatest for carbon steel material, and the least for PVC. Additionally, material exposure to the urine-rainwater mixture resulted in the smallest amount of scale formation. Based on these results, two new methods for improving sanitation practices are proposed: (1) using PVC as production material for urinals and pipelines; and (2) using rainwater for flushing systems.

scholarly journals Weight Optimization of Roller Shaft of Pad Steam Machine

2019 ◽  
Vol 9 (1) ◽  
pp. 7616-7623
Keyword(s):  
Carbon Steel ◽  
Textile Industry ◽  
Mechanical Test ◽  
Research Work ◽  
Hardness Test ◽  
Weight Optimization ◽  
Element Analysis ◽  
Steel Material ◽  
Stiffness Characteristic ◽  
Steel Aisi

the roller shaft of a continuous pad steam machine suddenly appeared the abnormal when it was running condition in textile industry which effects on maintenance of machine, time, cost, productivity importance etc. This paper present the material analysis, weight optimization and stiffness characteristic of roller shaft of pad steam machine maintaining the integrity of the specifications. A 3D model is created in Catia V5RI to mating to design, optimization and finite element analysis of roller shaft used in pad steam machine which is made of carbon steel material. The FEA was done in HYPER WORK software (Nastran & Optistruct) in two parts preprocessing and post processing by using four different materials based on their composition viz. Carbon steel AISI 1040, EN8, EN24, and AISI 6150. The parameter like von misses stress, deformation; maximum and minimum principal stress & strain were obtained from analysis Software. Santosh D Dalvi et. al. also worked on this system in 2017 by comparison of existing and new material AISI 1040. FEA show that the EN24 Material is best suggested material among all also find out results like weight and stiffness parameter. It is resulted of 12.527 % of weight with reduction in deformation. Performed two mechanical test i.e. tensile test and hardness test as per ASTM on sample specimens; results show that the strength and hardness are within the limit. This research work is improving shaft parameters which are used in textile industry, heavy duty application etc.

Carbon Steel X65QS Pipeline Qualification for Extreme Sour Service a Global Approach: Line Pipe, Welding, Eca Methodology and Diyab Pipeline Case Study

2021 ◽  
Author(s):  
Lam-Thanh Luc ◽  
Hamdi Saad ◽  
Matta Tanios ◽  
Dr. Al Bannay Aamer ◽  
Meer Mumtaz Ali Imtiaz Sirsimth ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Large Diameter ◽  
Base Material ◽  
Global Approach ◽  
Production Environment ◽  
Destructive Testing ◽  
Line Pipe ◽  
Steel Material ◽  
Pipe Welding ◽  
Sour Service

Abstract In the wake of failures of large diameter pipelines made from plates using the Thermo-Mechanically Controlled Process (TMCP), the suitability of carbon steel material for sour environments where the H2S partial pressure is largely over 1 bar has been questioned. Understanding that seamless quench and tempered material are not prone to the same phenomenon as large diameter TMCP pipes, it has been decided to ensure the integrity of the DIYAB pipeline by qualification using the actual production environment pH=3.5 at 24°C and 6.84 bar H2S plus 6.84 bar CO2. The global approach includes the qualification to sour service resistance under 6.84bar H2S of the base material and the welds without post weld heat treatment. Fracture toughness tests under 6.84bar H2S were also conducted, and the results fed into an Engineering Criticality Assessment (ECA) to define the Non-Destructive Testing (NDT) acceptance criteria. The NDT tools were selected for their ability to detect the critical flaws and validated. The global approach methodology and results are presented.

scholarly journals Structural and Thermal Analysis of Disc Brake With Drilled Holes Of Various Materials

2019 ◽  
Vol 8 (10) ◽  
pp. 2667-2671
Keyword(s):  
Thermal Analysis ◽  
Structural Analysis ◽  
Carbon Steel ◽  
Maximum Stress ◽  
Disc Brake ◽  
Mechanical And Thermal Properties ◽  
Heat Flow Rate ◽  
Braking System ◽  
Steel Material ◽  
Strain Stress

The design of braking system of a vehicles is very important in order to minimize the accidents and increase the life span of vehicle, with this motto, in this paper presented the structural analysis, fatigue analysis and thermal analysis of disc brake with drilled holes(DBDH) was done by considering various materials of DBDH such as carbon alloy, steel and carbon steel. The comparison of those materials is studied in various mechanical and thermal properties such as deformation, strain, stress, factor of safety, number cycles under cyclic loading and heat flux. Simulation studies were done in Ansys 14.5 version. It is observed that the heat flow rate is high in carbon alloy and low in carbon steel material of DBDH model. Maximum stress is observed in steel in structural analysis.

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