• International Journal of Naval Architecture and Ocean Engineering
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• 제10권1호
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• pp.48-59
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• 2018

This paper is mainly concerned with developing the formulae of predicting thermal deformation of steel plate due to multi-line heating. By investigating the results of line heating test and numerical analysis, reasonable heat flux model has been defined. Formulae of predicting the transverse shrinkage and the angular distortion as the dominant thermal deformation types in plate forming by line heating have been derived based on the results of line heating test and numerical analysis with varying plate thickness, heating speed and distance between torches. This paper illustrates how the derived formulae are used in investigating the effect of multi-line heating upon the thermal deformation and how they can be used in defining the limit distance with that there is no interacted effect between torches. This paper ends with describing the extension of the present study.

• Steel and Composite Structures
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• 제14권5호
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• pp.473-491
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• 2013

The primary objectives of this paper are to describe the buckling patterns and to determine the squash load of steel plate-concrete (SC) walls. The major variables in this study were the width-thickness (B/t) ratio and yield strength of surface steel plates. Six SC walls were tested, and the results include the maximum strength, buckling pattern of steel plates, strength of headed studs, and behavior of headed studs. Based on the test results, the effects of the B/t ratio on the compressive strength are also discussed. The paper also presents recommended effective length coefficients and discusses the effects of varying the yield strength of the steel plate, and the effects of headed studs on the performance of SC structures based on the test results and analysis.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2008년도 정기총회 및 학술발표대회
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• pp.37-40
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• 2008

The study is an experimental test on full-scale flat plate slab-column interior connection. The punching shear on the flat plate slab-column connection can bring about the reason of the brittle punching shear failure which may result of collapsing the whole structure. From the development of residential flat plate system, the shear reinforcement is developed for preventing the punching shear. For making sure of the punching shear capacity, developed for shear reinforcement in slab-column connection, the structural test is performed. The dimension of the slabs was 2620*2725*180mm with square column (600*800mm). The slabs were tested up to failure monotonic vertical shear forces. The presences of S/S bar and wire mesh substantially increased the punching shear capacity and the ductility of the slab-column connections.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1998년도 봄 학술발표회논문집(II)
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• pp.647-652
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• 1998

Recently, many strengthening methods are developed and used to rehabilitate existing structure. One of the popualr methods is the strengthening with steel plate. But steel plate have a defect that is a debondig at the end of the steel plate due to stress concentration. The objective of this paper is an experimental study for improving bonding properties of a strengthening plate. The two normally reinforced beams and ten strengthened beams steel plate, which has various notches were tested. The test results show that the notches of strengthening plate improve post-yield behavior significantly compared. It is proved that the notch in a strengthening plate increase of ulimate strength after the yield strength 9% more than ordinary strengthening method.

• Structural Engineering and Mechanics
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• 제5권1호
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• pp.69-83
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• 1997

A new efficient hybrid/mixed thin~moderately thick plate bending element with 6-node (HM6-14) is formulated based on the Reissner-Mindlin plate bending theory. The convergence of this element is proved by error estimate theories and verified by patch test respectively. Numerical studies on such an element as HM6-14 demonstrate that it has remarkable convergence, invariability to geometric distorted mesh situations, to axial rotations, and to node positions, and no "locking" phenomenon in thin plate limit. The present element is suitable to many kinds of shape and thin~moderately thick plate bending problems. Further, in comparison with original hybrid/mixed plate bending element HP4, the present element yields an improvement of solutions. Therefore, it is an efficient element and suitable for the development of adaptive multi-field finite element method (FEM).

• Journal of Acupuncture Research
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• 제24권6호
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• pp.75-88
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• 2007

Objectives : We investigated the effects of Hominis placenta Herbal acupuncture on rheumatoid arthritis. Methods : We investigated the Type II collagen-induced arthritis test, vascular permeability test, phenyl benzoquinone-induced writhing test, hot plate test, carbon clearance test, determination of prostaglandin $E_2$ content and cyclooxygenase-2 activity test. Results : Hominis placenta Herbal acupuncture suppressed Type II collagen-induced arthritis in DBA/1J mice and vascular permeability with 10.2% inhibition in ICR mice. We see the phenyl benzoquinone-induced writhing test and the hot plate test in the analgesic activity test. In the phenyl benzoquinone-induced writhing test, Hominis placenta Herbal acupuncture showed that it increased its analgesic effect more than the control(test?) by 85.5%. In the hot plate test, it was also shown that the analgesic effect increased more than the control(test) by 32.1%. In the carbon clearance test, the immuno-stimulatory effect showed more than the control(test) by 8.0%. The formation of prostaglandin $E_2$ was also reduced more than the control(test) by 10.1%. Finally, cyclooxygenase-2 activity was inhibitedwith 36.3%. Conclusions : Hominis placenta Herbal acupuncture may be useful for the treatment of rheumatoid arthritis after injection.

• 대한지역사회영양학회지
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• 제6권5호
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• pp.830-836
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• 2001

The purposes of this study were to : (a) analyze the portion size & plate waste of normal & soft diets provided by dietetic departments in hospital, (b) investigate the factors affecting plate waste, and (c) determine the nutritional & monetary value of plate waste. A questionnaire for food preference and sensory evaluation was developed and a survey was carried out for the 46 normal diet and 56 soft diet patients in Sanggye Paik hospital in Seoul. Serving size and plate waste were weighed by the electric scale, and CAN-Pro program was used to evaluate the nutrition value. The data were analyzed using the SAS package program for descriptive analysis, t-test, ANOVA, and Pearson correlation. The average plate waste rate for normal diet and soft diet were 30.3% and 49.6%. More plate waste amount occurred on female patients'diet than male patients'diets regardless of the kind of diet. The plate waste percentage of male patients were higher than those of female on normal diet. On soft diet, patients who hospitalized in surgery or pediatrics department were higher than in other wards. Plate waste of normal diet and amount were correlated positively, but wastage and preference were correlated negatively Negative correlation was between taste and plate waste, and between temperature and plate waste, too. On the other hand, plate waste caused the deficiency of some nutrients such as Ca, Fe, Vit. B$_2$and a great monetary loss.

• 비파괴검사학회지
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• 제6권1호
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• pp.23-30
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• 1986

The optimumultrasonic test conditions for the thin carbon fiber reinforced plastic (CFRP) sheet were determined for the immersed reflector plate method. The effects of the water distance, the surface conditions of the specimen and transducer characteristics were studied. For a reliable test the water distance between the transducer and the front surface of the specimen should be determined when the beam profile of the transducer appears in the bell-shape. The detectability of the defect was improved as the effective beam width of the ultrasonic transducer became narrow. The transducer should be properly chosen considering to the surface condition of the test material as well as the size and type of the defect to be detected. It was possible to detect the flat bottom hole whose diameter is as small as about 500 micrometer.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2004년도 추계학술대회
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• pp.1306-1311
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• 2004

The performance test apparatus of liquid-phase plate heat exchanger was installed and the computer program for design was developed in this study. The detail temperature distribution of hot and cold fluids in each path of heat exchanger was calculated by numerical method and the correlation for the heat transfer coefficient was defined. The heat transfer coefficients were measured using the working fluids of water and glycerine to investigate the effect of fluid viscosity. The measured heat transfer coefficients were compared with the calculated values obtained from the computer program and it was shown that error of the calculated values was generally less than 5%.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2003년도 추계학술대회논문집
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• pp.608-613
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• 2003

In this paper, the variability of modal properties caused by temperature effects is assessed to adjust modal data used for frequency-based damage detection in plate-girder bridges. First, experiments on model plate-girder bridges are described. Next, the relationship between temperature and natural frequencies is assessed and a set of empirical frequency-correction formula are analyzed for the test structure. Finally, a frequency-eased method is used to locate and estimate severity of damage in the test structure using experimental modal data which are adjusted by the frequency-correction formula. Here, local damage in beam-type structures is detected by using measured frequencies and analytical mode shapes.