• Title/Summary/Keyword: Steel plate

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Effects of Stainless Steel Plate-Patterns on the Thermal Distortion and Surface Temperature of Aluminum Frypan (알루미늄 프라이팬에 부착된 스텐리스판의 패턴이 열 변형 및 표면온도에 미치는 영향)

  • Moon, Sungmo;Yoon, Myungsik
    • Journal of the Korean institute of surface engineering
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    • v.53 no.5
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    • pp.227-231
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    • 2020
  • This article investigated the effects of stainless steel plate-patterns bonded to aluminum frypan on the thermal distortion and surface temperature of the frypan during gas or induction heating. Two different stainless steel plate-patterns were employed: type A contains only circular holes and type B has not only circular holes but also vacant spaces of 0.5 mm thick and 40 mm long straight line crossing 60 mm long curved line. The bottom of the frypan was distorted during heating when type A stainless steel plate-bonded frypan while no significant thermal distortion was observed for type B stainless steel plate-bonded frypan during heating. Temperature of the frypan surface showed the same trend during gas heating, irrespective of stainless steel plate-patterns. During induction heating, however, the frypan with type B stainless steel plate-pattern showed lower surface temperature than the frypan with type A stainless steel plate-pattern. It is concluded that Type B stainless steel plate-pattern with circular holes and vacant spaces of lines is very effective for minimizing a thermal distortion and lowering the surface temperature of an aluminum frypan during induction heating.

A Behavior Analysis of Railway Steel Plate Girder Bridge in the applying Resilient Panel Track system (방진궤도시스템 적용에 따른 강철도 무도상 판형교의 거동 분석)

  • Lee, Si-Yong;Eom, Mac;Oh, Soo-Jin;Park, Yong-Gul
    • Proceedings of the KSR Conference
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    • pp.437-446
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    • 2006
  • The major objective of this study is to investigate the effects and application of improvement for railway steel plate girder bridge by resilient panel track system. It analyzed the mechanical behaviors of steel plate girder bridge with applying resilient panel track system on the finite element analysis and laboratory test for static & dynamic characteristics. As a result, the improvement of steel plate girder bridge with resilient panel track systems are obviously effective for the static & dynamic response which is non-ballast steel plate girder bridge. The analytical and experimental study are carried out to investigate resilient panel track system decrease vertical acceleration and deflection on steel plate girder bridge for serviceability. And the resilient panel track system reduced dynamic maximum displacements(about 59%) and stresses(about 82%), the increase of dynamic safety is predicted by adopting resilient panel track system. From the dynamic test results of steel plate girder bridge, it is investigated that vertical acceleration and deflection is very low with applying resilient panel track system. The servicing steel plate girder bridge with resilient panel track system has need of the reasonable improvement measures which could be reducing the effect of static and dynamic behavior that degradation phenomenon of structure by an unusual response characteristic and a drop durability.

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A Behavior Analysis of Railway Steel Plate Girder Bridge in the Applying Resilient Panel Track System (방진제도시스템 적용에 따른 강철도 무도상 판형교의 거동 분석)

  • Choi, Jung-Youl;Eom, Mac;Kang, Duk-Man;Park, Yong-Gul
    • Journal of the Korean Society for Railway
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    • v.9 no.6
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    • pp.717-724
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    • 2006
  • The major objective of this study is to investigate the effects and application of improvement for railway steel plate girder bridge by resilient panel track system. It analyzed the mechanical behaviors of steel plate girder bridge with applying resilient panel track system on the finite element analysis and laboratory test for static & dynamic characteristics. As a result, the improvement of steel plate girder bridge with resilient panel track systems are obviously effective for the static & dynamic response which is non-ballast steel plate girder bridge. The analytical and experimental study are carried out to investigate resilient panel track system decrease vertical acceleration and deflection on steel plate girder bridge for serviceability. And the resilient panel track system reduced dynamic maximum displacements (about 59%) and stresses (about 82%), the increase of dynamic safety is predicted by adopting resilient panel track system. From the dynamic test results of steel plate girder bridge, it is investigated that vertical acceleration and deflection is very low with applying resilient panel track system. The servicing steel plate girder bridge with resilient panel track system has need of the reasonable improvement measures which could be reducing the effect of static and dynamic behavior that degradation phenomenon of structure by an unusual response characteristic and a drop durability.

Cyclic tests and numerical study of composite steel plate deep beam

  • Hu, Yi;Jiang, Liqiang;Zheng, Hong
    • Earthquakes and Structures
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    • v.12 no.1
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    • pp.23-34
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    • 2017
  • Composite steel plate deep beam (CDB) is proposed as a lateral resisting member, which is constructed by steel plate and reinforced concrete (RC) panel, and it is connected with building frame through high-strength bolts. To investigate the seismic performance of the CDB, tests of two 1/3 scaled specimens with different length-to-height ratio were carried out under cyclic loads. The failure modes, load-carrying capacity, hysteretic behavior, ductility and energy dissipation were obtained and analyzed. In addition, the nonlinear finite element (FE) models of the specimens were established and verified by the test results. Besides, parametric analyses were performed to study the effect of length-to-height ratio, height-to-thickness ratio, material type and arrangement of RC panel. The experimental and numerical results showed that: the CDBs lost their load-carrying capacity because of the large out-of plane deformation and yield of the tension field formed on the steel plate. By increasing the length-to-height ratio of steel plate, the load-carrying capacity, elastic stiffness, ductility and energy dissipation capacity of the specimens were significantly enhanced. The ultimate loading capacity increased with increasing the length-to-height ratio of steel plate and yield strength of steel plate; and such capacity increased with decreasing of height-to-thickness ratio of steel plate and gap. Finally, a unified formula is proposed to calculate their ultimate loading capacity, and fitting formula on such indexes are provided for designation of the CDB.

EFFECT OF STAINLESS STEEL PLATE POSITION ON NEUTRON MULTIPLICATION FACTOR IN SPENT FUEL STORAGE RACKS

  • Sohn, Hee-Dong;Kim, Jong-Kyung
    • Nuclear Engineering and Technology
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    • v.43 no.1
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    • pp.75-82
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    • 2011
  • The neutron multiplication factor in spent fuel storage racks, in which a stainless steel plate encloses a fuel assembly, was evaluated according to the variation of distance between the fuel assembly and stainless steel plate, as well as the pitch. The stainless steel plate position with the lowest multiplication factor on each pitch consistently appeared as 6mm or 9mm away from the outmost surface of the fuel assembly. Because the stainless steel plate has a thermal neutron absorption cross section, its ability to absorb neutrons can work best only if it is installed at the position where thermal neutrons can be gathered most easily. Therefore, the stainless steel plate position should not be too close or too far away from the fuel assembly, but it should be kept a pertinent distance from the fuel assembly.

A study on Development of Auto Steel-Plate Pile System Using Measurement System (계측시스템을 이용한 자동 강재 적치 관리 시스템 개발에 관한 연구)

  • Yu, Ji-Hun;Kim, Ho-Kyoung;Kim, Rea-Soo;Sin, Hun-Joo
    • Proceedings of the SAREK Conference
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    • pp.424-428
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    • 2008
  • On processing of the shipbuilding, Various steel plates are used as the important material in many fields including the shell plate, a structure, etc. Therefore, the proper steel plate management system like a warehousing, pile, delivery is very important. Presently Operators manage the steel plate by using the software program, but they manage many parts manually, so many problems are generated on the steel plate check, management, and operator safety. In order to solve this problem, we developed Auto Steel-Plate Piling System. Also this system automatically manages and traces the steel-plate from warehousing to delivery.

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A Study on Dynamic Behaviors of Steel Plate Girder bridge with Applying External Post-Tensioning Method (외부 후긴장 공법 적용에 따른 무도상 판형교의 동적거동 분석)

  • Choi, Dong-Ho;Choi, Jung-Youl;Choi, Jun-Hyeok;Park, Yong-Gul
    • Journal of the Korean Society for Railway
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    • v.9 no.2
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    • pp.160-168
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    • 2006
  • The major objective of this study is to investigate the effects and application of external post-tensioning method far steel plate girder bridge. It analyzed the mechanical behaviors of steel plate girder bridge with applying external post-tensioning on the finite element analysis, field test and laboratory test fur the lateral dynamic characteristics. As a result, the reinforcement of steel plate girder bridge the external post-tensioning method are obviously effective for the lateral dynamic response which is non-reinforced. The analytical and experimental study are carried out to investigate the post-tension force decrease lateral acceleration and deflection on steel plate girder bridge for serviceability. And the external post-tensioning method reduce dynamic maximum displacement(about $10{\sim}24%$), the increase of dynamic safety is predicted by adopting external post-tensioning method. From the dynamic test results of the servicing steel plate girder bridge, it is investigated that the change degree of natural frequency is very low with applying the external post-tensioning method The servicing steel plate girder bridge with external post-tensioning has need of the reasonable reinforcement measures which could be reducing the effect of lateral dynamic behavior that degradation phenomenon of structure by an unusual response characteristic and a drop durability.

An Experimental Study on the Strength and Deformation of Reinforced Concrete Columns Strengthed with Epoxy-Bonded Steel Plate (강판접착으로 보강된 철근콘크리트 기둥의 내력 및 변형에 관한 실험적 연구)

  • Kim, Jin-Bai;Lee, Si-Woo;Jang, Hwa-Kyun;Cho, Chul-Ho
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.3 no.1
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    • pp.147-155
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    • 1999
  • The purpose of this study is to investigate the strength and ductility of reinforced concrete columns subject to axial load experimentally for several variables of reinforcements and propose foundational research date for reinforcement design of column. In the test a total of eleven specimens, which are all $20{\times}20{\times}60cm$ in size and differently reinforced with steel plate, has been used. The main variables of reinforcement considered in the test are the width of steel plate, the thickness of steel plate. Based on the test results, the effect of the main variables on the strength and ductility of reinforced concrete column have been scrutinized. The strength of reinforced concrete columns are that C-2 series on strengthed with 2mm thickness steel plate are smaller than C-4 series on strengthed with 4mm steel plate. Thick steel plate of reinforced expected utilizer than the other on strength increase and specimens to be large width steel plate of each system are the utiltzer on strength increase. Ductility of C-0 specimen is 1.60, C-2 series is 2.38, C-4 series 2.63 Compare efficiency of ductility increase with each specimens, in narrow width condition (2cm, 4cm) C-2 series is more efficiency, in wide width condition (8cm, 10cm) C-4 series is more efficiency.

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A Study on the Protection of the Bare and Painted Steel Plates (아연 양극에 의한 도장강판과 나강판의 방식 연구)

  • 문경만;김종신;김진경
    • Journal of Advanced Marine Engineering and Technology
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    • v.17 no.1
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    • pp.55-65
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    • 1993
  • Galvanic protection method is one the cathodic protection methods and is mostly used for corrosion prevention of heat exchangers and ship's hull. In this paper, it was investigated that how cathodic potential distribution was varied with according to the bare and painted steel plates in case of galvanic anode protection. The results obtained above were as follows. 1. Cathodic potential distribution of a painted steel plate was smoothed than that of the bare steel plate all over the cathodic surface area. 2. It was shown that polarization potential of the bare steel plate was somewhat shifted to negative potential, on the contrary that of the painted steel plate was somewhat shifted from negative potential to positive potential as time gone by beginning of galvanic anode method. 3. The applied current density in order to maintain constant protection potential(-770mv SCE) in the painted steel plate was less than that of the bare steel plate because of the high resistance polarization of the painted steel plate. 4. It was suggested that required number and life-time of anode for galvanic anode protection could be decided easily with corrosion prevention coefficient obtained by experimental data.

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Flexural behaviour of steel plate-masonry composite beams

  • Jing, Deng-Hu;Cao, Shuang-Yin;Shi, Lei
    • Steel and Composite Structures
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    • v.13 no.2
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    • pp.123-137
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    • 2012
  • Steel plate-masonry composite structure is a newly-developed type of structural technique applicable to existing masonry buildings by which the load-bearing walls can be removed for large spaces. This kind of structure has been used in practice for its several advantages, but experimental investigation on its elements is nearly unavailable in existing literature. This paper presents an experimental study on the flexural behaviour of four steel plate-masonry composite beams loaded by four-point bending. Test results indicate that failure of the tested beams always starts from the local buckling of steel plate, and that the tested beams can satisfy the requirement of service limit state. In addition, the assumption of plane section is still remained for steel plate prior to local buckling or steel yielding. By comparative analyses, it was also verified that the working performance of the beam is influenced by the cross-section of steel plate, which can be efficiently enhanced by epoxy adhesive rather than cement mortar or nothing at all. Besides, it was also found that the contribution of the encased masonry to the flexural capacity of the composite beam cannot be ignored when the beam is injected with epoxy adhesive.