• Fire Science and Engineering
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• v.23 no.5
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• pp.66-71
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• 2009

In this study, I evaluated toxicity that analyze performance of flame-retardant about flame-retardant painting wood and combustion gas that is based on the toxicity index. Processing condition of flame retardant solution and treatment method of samples didn't affect greatly to performance of flame retardant. Occurrence of combustion gas showed a almost similar result from the sample which spraying flame retardant solution and toxicity corresponds to high level, Hazard Class III, and the flame retardant solution saturation sample which makes put out Hazard Class II which is a low toxicity relatively.

• Journal of Mechanical Science and Technology
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• v.19 no.6
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• pp.1268-1279
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• 2005

The current method for pavement sign marking operations is labor-intensive and very dangerous due to the exposure of workers to passing traffic. It also requires blocking traffic for a long period of time resulting serious traffic jam. This paper deals with the development of a robotic system for automating the pavement sign painting operations. The robotic system consists of gantry frame equipped with transverse drive rail and automatic paint spray system. The workspace of the gantry robot is extended to one-lane width with the transverse rail system. This research also includes the development of font data structures that contain the shape information of pavement signs, such as Korean letters, English letters and symbols. The robot path is generated with this font data through the procedures of scaling up/down and partitioning the signs to be painted depending on the workspace size.

• Journal of Conservation Science
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• v.35 no.1
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• pp.91-98
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• 2019

The fragments of a wall painting excavated from among the historical remains of Jeseoksa Temple in Iksan. The extent of the damage to the fragments was examined and an analysis of the components of the pigment was conducted. The results of the component analysis of the pigment confirmed that the white pigment consisted of alkali feldspar and mullite. Although the results of the visual inspection revealed differences in color in the red and black pigments, the main component of the two colors was confirmed to be iron oxide. Red and black pigments are found at the same position. Although differences of color is obvious, those are identified as hematite and magnetite of oxidized steel's affiliation. It is judged that Differences of ingredients happened by external environment's factors.

• International conference on construction engineering and project management
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• 2015.10a
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• pp.101-103
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• 2015

Scientific methods that measure the physical demand requirements of a construction operation have not been arrived at maturity in construction community. It is attributed to the difficulty involved in performing controlled experiments on the operation and its' volatile jobsite environment. This paper presents a method that measures the physical demand requirement of the waterproofing activity and verifies the differences between various operations (e.g., a primer painting and a polyurethane coating) consisting of the activity. Two hypotheses, which are involved in the operations, are summarized as follows: [Hypothesis 1] when one performs the same amount of work; the one's average heart rate required for the polyurethane coating operation is higher than that required for the primer painting operation. [Hypothesis 2] when one performs the same amount of work, the one's break time required for the polyurethane coating operation is longer than that required for the primer painting operation.

• Proceedings of the KSME Conference
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• 2007.05b
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• pp.2967-2970
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• 2007

In a usual painting process, a liquid drop spreads on canvas by being dragged along a paintbrush. To obtain the fundamental understanding of the painting process from the mechanical point of view, we experimentally investigate various dynamic behavior of a liquid drop that spreads between moving solid plates. It is shown that three distinct types of drop spreading take place, i.e. shearing, spreading, and intact dragging, depending on the liquid viscosity and surface tension, the plate speed, and the wettability. We suggest a regime map based on the capillary number and the receding contact angle, which indicates the boundaries between different types of spreading behavior in a dimensionless space.

• Journal of the Korean Society of Clothing and Textiles
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• v.29 no.5 s.142
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• pp.626-636
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• 2005

These days. the representative fashion image is sexy look. Hence, a bodily exposure phenomenon has been spread by the effect of minimal fashion. In terms of this trend, the body make-up art such as the temporary painting have the painting dyeing the surface of skin has the characteristic naturally decolorized. It is different from tattoo pricking the skin with dyes. Especially, Henna among the temporary painting has been used to represent the individual characteristic for a long time. However, the research of henna pattern related to fashion images and korean traditional patterns has never been developed before within the country. In the research, we developed Korean Henna design through the application of Korean traditional patterns. First of all, a fashion image was classified as five parts (romantic, sexy, eligant, modem and casual) adopted by relebvant experts.

• Journal of Conservation Science
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• v.5 no.2 s.6
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• pp.57-64
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• 1996

Korean Paintings have been drawn on in the main two types of support material - paper and silk. In these things, silk designates picture silk, that of a specially weaved textile for painting since CHO-SUN dynasty, different such as hemp, ramie have been started to use for support material In addition to picture silk. However the structure of hemp and ramie are so close and progue, They are not proper to express the technique of pigments on the back of the paintings. On the other hand, picture silk is efficacious in pigments on the back of the painting with its interval between the strands and translucent textile. As the result, paintings on the silk has many - sided techniques as compared with painting on the papers therfore various devices in conservation have to be considered to deal with the techniques. In this report the focus is on classifying the method of removing the Lining paper according to the several types of expression technique of paintings on the silk.

• Journal of Drive and Control
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• v.19 no.1
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• pp.1-7
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• 2022

Recently, a re-painting robot was developed to semi-automatically conduct blasting work in bridge spaces to improve work productivity and worker safety. In this study, a vision sensor-based monitoring module was developed to automatically move the re-painting robot along the path. The monitoring module provides direction information to the robot by analyzing the boundary between the painting surface and the metal surface. To stably measure images in unstable environments, various techniques for improving image visibility were applied in this study. Then, the driving performance was verified in a similar environment.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2022.11a
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• pp.95-96
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• 2022

Based on the analysis of defects occurring before and after painting work, this study intends to derive a reasonable improvement in judgment criteria and propose an amendment to the relevant law through the establishment of a clear fire door replacement cycle in terms of fire safety.

• Transactions of the Korean Society of Automotive Engineers
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• v.12 no.4
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• pp.42-49
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• 2004

When a truck cab is conveyed at a constant speed by a hanger and immersed into the painting reservoir, it may fall off from the hanger by buoyancy. In order to reduce the buoyancy, on the bottom of a cab panel are holes placed, which allow paint to flow into the inside of a cab. In this study, a differential equation is derived which can be solved numerically by using 4th-Order Runge-Kutta method to calculate transient behavior of the buoyant force with sizes and locations of the holes given. The solution is utilized to optimally determine sizes and locations of the holes.