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Volume 37 (1999)
- Issue 6 Pages 356-
- Issue 5 Pages 290-
- Issue 4 Pages 206-
- Issue 3 Pages 120-
- Issue 2 Pages 58-
- Issue 1 Pages 3-
Predecessor
Volume 37, Issue 5
Displaying 1-8 of 8 articles from this issue
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Kenji YASUNAKA, Tsukasa FUJIMURA, Nobuyuki NISIMOTO1999 Volume 37 Issue 5 Pages 290-298
Published: September 25, 1999
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSThe purpose of this report is to make clear the effect of material property on seam weldability of surface finished steel sheet. In this paper, weldability, contact resistance and forging property were investigated on surface finished steel sheet. In addition, heating curve in seam welding was studied theoretically using the Joule's low.
Contact resistance have a large influence on weldability. Increase of contact resistance results in wider available current range.
By solving the Joule's law, the temperature deviation proved to be influenced by the electric resistance. These analytical results may support the experimental facts.View full abstractDownload PDF (3959K) -
2nd Report: Influences of the location of hoop winding ends upon the strain distribution and the safety of cylindersTatsumi TAKEHANA1999 Volume 37 Issue 5 Pages 299-306
Published: September 25, 1999
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSThis paper discusses the influences of the location of hoop-winding-ends upon the strain distribution and the safety of cylinders. FEM analysis was conducted to examine the strain distribution in the composite cylinders with different locations of hoop-winding-ends; with the excess or partial lack of hoop winding in the vicinity of the dome-cylinder boundary.
The strain analysis revealed that the partial lack of hoop winding affects the strains in cylindrical part more than in dome part. The control of hoop winding ends is therefore important to assure the total safety of composite cylinders.View full abstractDownload PDF (3139K) -
Hiroshi MIMURA1999 Volume 37 Issue 5 Pages 307-314
Published: September 25, 1999
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSEmpirical formulas were presented by Battelle researchers and Akiyama on the propagation condition of the unstable ductile fracture in gas pipelines.
In consideration for kinetics of bulge formation near the propagating crack tip, the present paper proposes a simple model which is qualitatively consistent with the empirical formulas.View full abstractDownload PDF (1186K) -
Masakazu TAKAGAKI, Toshiya NAKAMURA, Yasuhide ASADA1999 Volume 37 Issue 5 Pages 315-323
Published: September 25, 1999
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSIn the present study, a continuum plasticity theory based on continuum damage mechanics (CDM) is proposed to make an approximated elasto-plastic stress analysis of multiply flawed structure. In the present model the yield function is assumed to be dependent on the hydrostatic stress in order to consider the stiffness reduction due to the existence and opening of flaws in tensile stress state. The evolution of damage parameter is assumed to be given by J integral. FE analysis of an plane stress problem is demonstrated with the present model.View full abstractDownload PDF (1316K) -
Toshihiko OHTA, Kenji ITO1999 Volume 37 Issue 5 Pages 325-332
Published: September 25, 1999
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSHigh pressure plays a very important role on the material behavior. Especially under extra high pressure (>2Gpa), unknown and interesting phenomena would occur which cannot be expected under normal pressure, and be utilized for the development of new materials.
In this report, extra high pressure techniques are described associated with the pressurizing method, examples of the new material development and current status of the numerical simulation technology and its application to material design.View full abstractDownload PDF (2962K) -
Yasuyuki SUZUKI, Cheng HU1999 Volume 37 Issue 5 Pages 333-339
Published: September 25, 1999
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSThis summary introduces ion beam technology under high vacuum condition, especially ion implantation, which utilizes selcted and controlled ion particles.
Since the ion implantation method makes extreme severe condition dynamically, it is the unique method to study particle dynamics on the surface of materials.
The velocity of ion beam accelerated by electrical potential is one hundred times higher than that of explore power of chemical reaction, such as dynamite, which means the temperature of the implanted ion is as much as 500 million degree. Using this extreme energy, we report the study of synthesis of cubic boron nitride (c-BN).
Although there are many molecular dynamics simulations of particle reaction on surface, few experimental proofs are shown for the degrees of pressure and temperature when the ion is attack the surface. By studying the synthesis of c-BN, we report the phase diagram with the substrate temperature and accelerated voltage of ion. Finally, we introduce the next generation of ion beam technique, which induces new method of developing new materials.View full abstractDownload PDF (1099K) -
KAWASAKI HEAVY INDUSTRIES, LTD1999 Volume 37 Issue 5 Pages 340-342
Published: September 25, 1999
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSShirashima Oil Storage Terminal was completed in August 1996. It is located on the otherwise uninhabited Shirashima Island about 8km off coast of the Kita Kyushu. This on-ocean oil storage terminal is one part of the national oil storage base project. The barge shaped floating oil storage tanks are surrounded by a primary oil spill barrier of floating steel and a secondary breakwater barrier.
Kawasaki Heavy Industries, Ltd. manufactured the primary oil spill barrier for this terminal.View full abstractDownload PDF (532K) -
[in Japanese]1999 Volume 37 Issue 5 Pages 343-344
Published: September 25, 1999
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSDownload PDF (3949K)
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