Analysis of Stress Distribution for Powder Compression Molding by Finite Element Method

2019 ◽  
Vol 891 ◽  
pp. 269-274 ◽  
Author(s):  
Prakorb Chartpuk ◽  
Chaiwat Chaimahapuk
Keyword(s):  
Stress Distribution ◽  
Natural Frequency ◽  
Ceramic Powder ◽  
Bearing Steel ◽  
Outer Diameter ◽  
Maximum Compression ◽  
Aisi 52100 ◽  
Steel Aisi ◽  
The Difference ◽  
Powder Compression

The ultrasonic mold was designed for the ceramic powder compression. CAD and CAE were used in the design to analyze the mold strength and its natural frequency. The study of stress distribution and compression in upper and lower punch, mold body and waveguide comparison of stresses was analyzed by FEA experiments under maximum compression at 50,000 N to validate the results of both methods and the mold natural frequency. The difference between FEA and experimental analysis was 3-7%, acceptable. The redesign results in a cylindrical mold body with the outer diameter of 80 mm, the height of 100 mm, and the upper punch of 125 mm in length. The six sides are 26 mm of the high waveguide with 100 mm height. The internal and external diameters are 80 and 110 mm, respectively. The mold has been redesigned and can support the maximum compression force of 1,500 kN. with the bearing steel, AISI 52100, obtainable hardness 65 HRC, the stress concentration occurs at the neck of the upper punch using the ultrasonic at 12.00 to 12.45 kHz.

Very Long Life Fatigue Behavior of Bearing Steel AISI 52100

2005 ◽  
pp. 1846-1851
Author(s):  
Q.Y. Wang ◽  
Hong Yan Zhang ◽  
M.R. Sriraman ◽  
S.X. Li
Keyword(s):  
Fatigue Behavior ◽  
Bearing Steel ◽  
Aisi 52100 ◽  
Steel Aisi ◽  
Long Life

Very Long Life Fatigue Behavior of Bearing Steel AISI 52100

2005 ◽  
Vol 297-300 ◽  
pp. 1846-1851 ◽  
Author(s):  
Q.Y. Wang ◽  
Hong Yan Zhang ◽  
M.R. Sriraman ◽  
Shou Xin Li
Keyword(s):  
Fatigue Limit ◽  
Fatigue Testing ◽  
Fatigue Behavior ◽  
Testing Machine ◽  
Bearing Steel ◽  
Aisi 52100 ◽  
Steel Aisi ◽  
Reversed Loading ◽  
Long Life ◽  
Number Of Cycles

For many applications, the understanding of very long life fatigue in materials becomes extremely important. In this study, the fatigue behavior of bearing steel GCr15 (conforming to AISI 52100) at very high number of cycles has been examined. Experiments on hourglass specimens were conducted in air at room temperature, for fully reversed loading condition (R=-1), using a piezoelectric fatigue testing machine operating at a frequency of 20kHz. The results indicate that the S-N data does not reach a horizontal asymptote (signifying the fatigue limit) at 107 cycles, as conventionally believed, and that the material can fracture up to 109 cycles. Therefore, to quote a fatigue limit at 107 cycles may not hold good for the material studied. The influence of defects (such as inclusions) on the crack initiation and fracture was analyzed by scanning electron microscopy.

An Investigation in Wear and Friction of Oil Seal for Rubbing by Flame-Sprayed Alloy and Ceramic on Lower Carbon Steel

2021 ◽  
Vol 319 ◽  
pp. 52-57
Author(s):  
Chao Ping Huang ◽  
Sheng Yen Hu ◽  
Tung Ying Li ◽  
Yuan Kang
Keyword(s):  
Wear Resistance ◽  
Carbon Steel ◽  
Ceramic Powder ◽  
Surface Friction ◽  
Bearing Steel ◽  
Coating Materials ◽  
Aisi 52100 ◽  
Wear And Friction ◽  
Sprayed Coating ◽  
Lower Carbon

In this paper, the effect of sprayed coating on the surface of carbon steel on friction and abrasion properties of oil seals which are rubbed by various anti-wear coating materials on is investigated experimentally, and compared with the uncoated AISI 52100 bearing steel. We used the block vs ring tester to explore the friction coefficient of hard surface friction of 5 commonly used rubber seal to 4 different coating layers of bearing steel under oil/no oil conditions. Four coating materials are used, which are Ni-Cr-B-Si alloy, Ni-Cr-WC alloy, ceramics, and ceramics. Five varieties of the oil seal material named HNBR, NBR, FKM, ACM, and SIL are subjected to wear tests for the measurements of friction and abrasion. The experimental results show that HNBR has better wear resistance and less friction, ceramics have higher friction and wear resistance than other coatings due to higher hardness. In terms of oil seal and sprayed coating, Ni-Cr-B-Si alloy and ceramic powder are more suitable for surface wear resistance, because of its hardness and wear resistance and the degree of damage to the oil seal are more excellent. Generally, the greater the wear resistance of the oil seal material, the greater its friction with the coating.

A study on the initiation processes of white etching cracks (WECs) in AISI 52100 bearing steel

Wear ◽  
2021 ◽  
pp. 203864
Author(s):  
J. Spille ◽  
J. Wranik ◽  
S. Barteldes ◽  
J. Mayer ◽  
A. Schwedt ◽  
...  
Keyword(s):  
Bearing Steel ◽  
White Etching Cracks ◽  
Aisi 52100

Thermal-Mechanical Effect on Temperature/Stress Distribution when Orthogonal Cutting Bearing Steel

2009 ◽  
Vol 407-408 ◽  
pp. 420-423
Author(s):  
He Ping Wang ◽  
Xue Ping Zhang
Keyword(s):  
Stress Distribution ◽  
Orthogonal Cutting ◽  
Cutting Speed ◽  
Chip Morphology ◽  
Bearing Steel ◽  
Mechanical Effect ◽  
Arbitrary Lagrangian Eulerian ◽  
Calculation Results ◽  
On Chip ◽  
Explicit Dynamic

An explicit dynamic coupled thermal-mechanical Arbitrary Lagrangian Eulerian (ALE) model was established to simulate orthogonal cutting AISI 52100 bearing steel, and its temperature and stress distribution. Based on ABAQUS, The ALE approach effectively simulates plastic flow around round edge of the cutting tool without employing chip separation criteria. The calculation results reveal that cutting speed and cutting depth have great impact on chip morphology, stress and temperature distribution in the finished surface and subsurface, the predicted temperature agrees well with experiment data obtained under the similar cutting conditions as well as the change in chip morphology from continuous to sawtooth as the cutting speed increases.

Impact of Heating Rate on the Tribological and Corrosion Properties of AISI 52100 Bearing Steel Consolidated via Spark Plasma Sintering

2021 ◽  
Author(s):  
Akeem Yusuf Adesina ◽  
Muzafar Hussain ◽  
Abbas Saeed Hakeem ◽  
Abdul Samad Mohammed ◽  
Muhammad Ali Ehsan ◽  
...  
Keyword(s):  
Heating Rate ◽  
Spark Plasma Sintering ◽  
Bearing Steel ◽  
Corrosion Properties ◽  
Plasma Sintering ◽  
Aisi 52100 ◽  
Spark Plasma

scholarly journals In Bangladeshi Female Cadaver, the Change of Outer Diameter of the Infundibulum of Fallopian Tube in Advancing Age

2018 ◽  
Vol 8 (2) ◽  
pp. 23-25
Author(s):  
Hasna Hena ◽  
Shamim Ara ◽  
Hosna Ara Perven ◽  
Dilruba Siddiqua ◽  
Fatema Johora ◽  
...  
Keyword(s):  
Fallopian Tube ◽  
Age Groups ◽  
Normal Structure ◽  
Outer Diameter ◽  
Fallopian Tubes ◽  
Cross Sectional ◽  
Medical College ◽  
The Difference ◽  
Group B ◽  
The Right

Context: Problems with the fallopian tubes can lead to infertility. Disease can be defined and measured only in terms of deviation from normal structure. Detailed morphological and histological knowledge is essential for the diagnosis and management of fallopian tube disease. Objectives: To identify the outer diameter of the infundibulum and its changes with advancing age. Study Design: Cross sectional descriptive type of study. Period and place: Department of anatomy, Dhaka Medical College from July 2008 to June 2009. Materials: Present study was performed on post mortem fallopian tubes of 60 Bangladeshi female. Among them lowest age was 12 years and highest age was 50 years. Methods: Samples were divided into three differential age groups: Group A (10-13 years), Group B (14-45 years), Group C (46-50 years). All samples were studied morphologically and histologically. Results: The mean outer diameter of the infundibulum of the right and left fallopian tubes ranged from 0.80±0.01 to 1.03±0.22 mm. The difference between all the groups were statistically significant (p < 0.001). Conclusion: There was change in outer diameter of the infundibulum of fallopian tubes of left and right in relation to age. Update Dent. Coll. j: 2018; 8 (2): 23-25

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