B13-P-08Effectiveness of cooling temperature control on preparation of a specimen cross section

Microscopy ◽  
2015 ◽  
Vol 64 (suppl 1) ◽  
pp. i96.2-i96
Author(s):  
Shogo Kataoka ◽  
Munehiro Kozuka ◽  
Tsuyoshi Wakasa ◽  
Yuhei Nakajima ◽  
Kouji Todoroki ◽  
...  
Keyword(s):  
Cross Section ◽  
Temperature Control ◽  
Cooling Temperature ◽  
Specimen Cross Section

scholarly journals Cooling Temperature Control System for the Cross Section Polisher

2015 ◽  
Vol 21 (S3) ◽  
pp. 151-152
Author(s):  
Shogo Kataoka ◽  
Munehiro Kozuka ◽  
Tsuyoshi Wakasa ◽  
Koji Todoroki ◽  
Toru Kasai ◽  
...  
Keyword(s):  
Control System ◽  
Cross Section ◽  
Temperature Control ◽  
Temperature Control System ◽  
Cooling Temperature ◽  
The Cross

scholarly journals The Ovalisation of Steel Circular Hollow Sections under Bending

2018 ◽  
Vol 11 (1) ◽  
Author(s):  
Manahel Sh. Khalaf ◽  
Amer M. Ibrahim
Keyword(s):  
Cross Section ◽  
Local Buckling ◽  
Bending Moment ◽  
Thickness Ratio ◽  
Experimental Results ◽  
Experimental Program ◽  
Specimen Length ◽  
Specimen Cross Section ◽  
The Cross

This paper investigates the ovalisation behavior of the Steel Circular Hollow Sections (CHSs) when subjected to bending moment. The experimental program included testing of ten specimens in four groups in order to examine the influence of changing the diameter, thickness, length and the presence of openings on the ovalisation phenomenon of these specimens.The experimental results showed that the ovalisation of the specimen cross-section appears clearly when the diameter to thickness ratio (D/t) is ranging from 17 to 50, while the ovalisation of the specimens that have D/t ratio greater than 50 is very little or unclear because the instability of these specimens are controlled by the local buckling. In addition, the change of the specimen length and the presence of openings didn’t cause the cross-section ovalisation

Determination method for rutting specimen cross-section deformation curve based on line-structured light

2016 ◽  
pp. 639-643
Author(s):  
H Ying ◽  
Q Wu ◽  
Y Liu ◽  
H Chen ◽  
W Wang ◽  
...  
Keyword(s):  
Cross Section ◽  
Structured Light ◽  
Deformation Curve ◽  
Determination Method ◽  
Specimen Cross Section ◽  
On Line

scholarly journals Compensation of x-ray mirror distortion by cooling temperature control

2019 ◽  
Author(s):  
Matthew Hand ◽  
Hongchang Wang ◽  
Maria Harkiolaki ◽  
Federica Venturini ◽  
Rosa Arrigo ◽  
...  
Keyword(s):  
Temperature Control ◽  
X Ray ◽  
Cooling Temperature

scholarly journals Minimum Surface Formation Energy for Three-Dimensional Intergranular Fracture

1998 ◽  
Vol 539 ◽  
Author(s):  
E. A. Holm ◽  
G. N. McGovney
Keyword(s):  
Fracture Surface ◽  
Cross Section ◽  
Intergranular Fracture ◽  
Formation Energy ◽  
Boundary Energy ◽  
Surface Formation ◽  
Minimum Surface ◽  
Specimen Cross Section ◽  
Fracture Area ◽  
Surface Formation Energy

AbstractThe minimum expended energy for fracture is the free energy required to form two new surfaces. For intergranular fracture, the minimum surface formation energy is complicated by the rough fracture surface, with area greater than the specimen cross-section. We utilize network optimization algorithms (max-flow/min-cut) to determine the minimum surface formation energies and surfaces for intergranular fracture in 3D polycrystals. For equiaxed grains and uniform boundary strength, the minimum energy fracture area is independent of grain size and is 45% larger than the specimen cross-section, and intergranular fracture will occur when surface energy is less than 1.6 times the grain boundary energy. The 3D fracture area is larger than projected from 2D systems. In systems with microcracked boundaries, the fracture surface deviates to preferentially include microcracked boundaries, creating interlocking grain configurations. Two-dimensional percolation of microcracks occurs at about 80% microcracked boundaries.

scholarly journals Study on Optimization of Temperature Control Measures for Structure Concrete of Arc Dam

2021 ◽  
Author(s):  
Lei Zhang ◽  
Xiaofang Ma ◽  
Heng Zhao ◽  
Lei Zheng ◽  
Shouxun Ma
Keyword(s):  
Phase I ◽  
Temperature Stress ◽  
Temperature Control ◽  
Simulation Analysis ◽  
Complex Structure ◽  
Arch Dam ◽  
Control Measures ◽  
3D Fem ◽  
Water Pipes ◽  
Cooling Temperature

As the gate pier bracket of an arch dam are of complex structure which is characterized by use of high-grade concrete and more cement, higher adiabatic temperature rise, it is rather difficult to control temperature and vulnerable for cracking, and the cracks would absolutely affect the integrity, endurance and safety of pier gate bracket. It is necessary to take reasonable temperature control measures to reduce temperature stress during the construction and prevent cracking. This paper takes the gate pier bracket at the middle-hole dam section to perform simulation analysis of temperature field and stress field under different temperature control measures by 3D FEM. It proves that such measures as densifying water pipes, improving Phase I target cooling temperature appropriately, reducing Phase I cooling temperature falling variation and keeping insulation in low-temperature season can help reduce temperature stress and prevent cracking with good results.

Nanoscale Thermal Imaging of Thermionic Devices Using Scanning Thermal Microscopy

2001 ◽  
Author(s):  
Kwong-Luck Tan ◽  
Andrew Miner ◽  
Xiaofeng Fan ◽  
Chris LaBounty ◽  
Gehong Zheng ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Cross Section ◽  
Temperature Control ◽  
Thermal Imaging ◽  
Relative Size ◽  
Cooling Curves ◽  
Scanning Thermal Microscopy ◽  
Cross Sectional ◽  
Cooling Performance ◽  
Thermal Microscopy

Abstract Ever increasing importance of cooling and precise temperature control in microelectronics and optoelectronics has driven recent development of integrated thermoelectric and thermionic cooling structures. Previous studies have investigated SiGe/Si superlattice thermionic coolers experimentally using thermocouples that were 50 μm in diameter. However, the relative size of these thermocouples as compared to the devices sizes (30–100 μm) makes surface and cross-section temperature measurement of the SiGe/Si superlattice thermionic coolers not possible. In this work, a sub 100 nm probe was used to measure the surface and cross-sectional temperature of the SiGe/Si superlattice thermionic coolers using scanning thermal microscopy. Two sets of superlattice thermionic coolers were used in this study and their cooling curves (temperature vs current) are presented. Each set consists of six devices of different sizes. A comparison of device cooling performance is examined. A mechanism for studying thermionic cooling in the superlattice coolers is discussed through an analysis of the cooler cross-section temperature profile.

Effect of the size of the specimen cross section on the long-term strength of polyethylene

1975 ◽  
Vol 9 (4) ◽  
pp. 653-655
Author(s):  
M. A. Natov ◽  
N. G. Tuleshkov
Keyword(s):  
Cross Section ◽  
Term Strength ◽  
Specimen Cross Section

Effect of Specimen Cross Section and Notch Radius on the Hydrogen Embrittlement Susceptibility of Tempered and Quenched AISI 4140 Steel

2019 ◽  
Vol 49 (4) ◽  
pp. 20190330
Author(s):  
Marcus Vinícius Rezende Júnior ◽  
Marcelo Torres Piza Paes ◽  
Waldek Wladimir Bose Filho ◽  
Rosenda Valdés Arencibia ◽  
Sinésio Domingues Franco
Keyword(s):  
Hydrogen Embrittlement ◽  
Cross Section ◽  
Notch Radius ◽  
Aisi 4140 Steel ◽  
Specimen Cross Section ◽  
Aisi 4140
Sign in / Sign up

Export Citation Format

Share Document