• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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• pp.236-239
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• 2001

In this study, the compound materials of GRT/plastics (HDPE, LLDPE, LDPE, PP and PS) were developed. Their tensile strength, strain at yield and flexural modulus according to the change in CRT content were measured. And, the physical properties of the compound materials that the GRT content was changed in the waste vinyl HDPE and pure HDPE were measured, compared and analyzed. If tile GRT is added to PE plastics, the physical properties were superior to those of PP and PS, and in the case of HDPE, the waste vinyl HDPE had superior physical properties by the GRT content to the pure HDPE.

• 오토저널
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• 제2권1호
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• pp.32-38
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• 1980

In the case of a automobile marking skid on road for a period of braking, in general, the automobile velocity just before rapid braking can be obtained by evaluating the coefficient of friction between tires and road. Up to now, the coefficient of friction has been derived from mean velocity measured by a time watch, but the automobile velocity obtained in this manner would be deviated from actual value considerably, due to errors arising from not only measuring time but other various factors. In this paper the presumption method of automobile velocity by accelerometer is presented so as to improve the accuracy of measurement, and to determine the velocity readily. The results obtained in this experiment show that the frictional coefficients between tires and road under the given experimental conditions are considered to take linear relation over the fixed velocity limits 30km/h to 50km/h while for the same limits of velocities the coefficients of friction by the time watch method are not valid ar low velocity range. It will be seen that the former is simple and reliable whilst the latter is cumbersome and unreliable.

• 한국자동차공학회논문집
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• 제7권8호
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• pp.199-207
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• 1999

For the stress and vibration analysis of vehicle component by computer simulation, it is necessary to find the forces acting on the vehicle components due to the road profile undulation. A precise modeling of tires is not easy due to nonlinear effects between tire-ground. In this study, a new method is proposed to regenerate road profiles that preserves the same PSD of wheel with a linear tire model. Using the frequency response function between road-wheel , the digital signal processing method, and DADS program , road profile is regenerated from the computer simulation.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2003년도 춘계학술대회논문집
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• pp.357-361
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• 2003

According to the remarkable reduction of the vehicle noise, the important of tire noise which is generated from the vehicle and the necessities of the researches for the noise reduction are emphasized. In this study, we have studied the road noise which is excited by the interaction between tire and road. In order to evaluate the road noise, we carry out the subjective test(feeling test). In order to consider the effect of the vehicle suspension for the tire/road noise, we are equipped with identical tires on the differential vehicle suspension and evaluate the road noise. In order to consider the effect of the tire structure for the tire/road noise, we evaluate the some tires with various structures. From the test results, we fine that the difference of road noise is generated by the variation of the vehicle suspension. Also, we can select the optimized tire structure which can be reduced the road noise.

• Elastomers and Composites
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• 제31권2호
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• pp.95-103
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• 1996

Nowadays, recycling of waste materials is one of great attention among all industries. Especially, the waste tires become a significant problem with increasing in a number of automobiles. For recycling of the waste tires, a polyurethane binder was mixed with the scrapped rubber powders obtained from tread part of the waste tire. This study covered the effect of processing conditions;curing temperature and curing time;on the mechanical properties of the blend. We also compared the experimental results from labors-tory scale with those from scale-up.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2008년도 추계학술대회B
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• pp.1990-1995
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• 2008

The thermochemical recycling of waste tires by pyrolysis is studied to recover the value added three by-products; a pyrolytic carbon black, a pyrolytic oil, and a non-condensable gas. The exhausted energy from pyrolysis of waste tires is converted for electricity power and process steam in cogeneration system. The characteristics of the pyrolysis recovered by-products as alternative energy resource are investigated with the design of a demonstration and a commercialization plant including cogeneration system, as called integrated pyrolysis cogeneration system.

• International Journal of Air-Conditioning and Refrigeration
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• 제12권2호
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• pp.87-96
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• 2004

Acoustic performances of the steel-wire fabrics manufactured from the crushed tires were experimentally investigated for various thicknesses and bulk densities. The well- known two-cavity method was used to measure the characteristic impedances, the propagation constants, and the absorption coefficients. The normal absorption coefficients measured by the two-cavity method agreed well with those measured by the two-microphone impedance tube method. The experimental results showed that the magnitude and frequency range of the absorption coefficient were controllable by changing the thickness and the bulk density of the steel-wire fabrics. Therefore, the steel-wire fabrics from the crushed tires can be successfully used as a good sound absorbing material.

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 1997년도 하계 학술대회 논문집
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• pp.55-62
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• 1997

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2011년도 춘계학술대회 논문집
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• pp.401-402
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• 2011

• 한국산학기술학회논문지
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• 제15권6호
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• pp.3888-3893
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• 2014

국내에서 발생하는 폐타이어량이 증가하고 있다. 폐타이어의 효율적인 재활용 방법중 하나가 열분해공이다. 본 연구에서는 열분해 공법을 이용하여 폐타이어로부터 추출한 열분해 카본블랙을 배수성 아스팔트 혼합물에 혼합하여 소성변형특성을 평가하였다. 시험에 이용한 구속응력은 138 kPa, 축차응력은 551 kPa를 이용하였다. 시험온도는 45도를 적용하였다. 시험에 필요한 시편은 SHRP의 슈퍼페이브 다짐장비를 이용하여 중규모 교통량 조건을 구현하는 50회 선회다짐조건을 적용하였다. 열분해 카본블랙 10%를 사용한 아스팔트 혼합물의 안정도 값이 3.41 kN으로 가장 크게 나타났다. 열분해 카본블랙을 이용하지 않은 경우에 비해 50% 이상의 안정도(kN) 증가 효과를 나타내었다. 전체적으로 PCB를 사용하지 않은 시편의 소성변형이 PCB를 사용한 시편의 소성변형에 비해 크게 나타났다. PCB 사용시 5%에서 10%를 이용하는 것이 소성변형을 최소화 할 수 있는 것으로 나타났다.