지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.12
- 수록면
- 680 - 689 (10page)
이용수
초록· 키워드
오류제보하기
Temperature effects on the generation of brake wear particles from railway vehicles were generated, with a particular focus on the generation of ultrafine particles. A real scale brake dynamometer test was repeated five times under low and high initial temperatures of brake discs, respectively, to obtain generalized results. Size distributions and temporal patterns of wear particles were analyzed through visualization using clustered heatmaps. Our results indicate that high initial temperature conditions promote the generation of ultrafine particles. While particle concentration peaked within the range of fine sized particles under both low and high initial temperature, an additional peak occurred within the range of ultrafine sized particles only under high initial temperature. The timing of peak occurrence also differed between low and high initial temperature conditions. Under low initial temperature fine sized particles were generated intensively at the latter end of braking, whereas under high initial temperature both fine and ultrafine particles were generated more dispersedly along the braking period. The clustered correlation heatmap divided particle sizes into two groups, within which generation timing and concentration of particles were similar. The cut-off point between the two groups was approximately 100 nm, confirming that the governing mechanisms for the generation of fine particles and ultrafine particles are different.
목차
ABSTRACT
1. Introduction
2. Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (30)
참고문헌 신청
WHO. Health effects of particulate matter. Policy implications for countries in eastern Europe, Caucasus and Central Asia. World Health Organization; 2013.
Abbasi S, Jansson A, Sellgren U, Olofsson U. Particle emissions from rail traffic: A literature review. Crit. Rev. Environ. Sci. Technol. 2013;43:2511-2544
Amato F, Cassee FR, Denier van der Gon HAC, et al. Urban air quality: The challenge of traffic non-exhaust emissions. J. Hazard. Mater. 2014;275:31-36
Denier van der Gon HAC, Gerlofs-Nijland ME, Gehrig R, et al. The policy relevance of wear emissions from road transport, now and in the future ? An international workshop report and consensus statement. J. Air Waste Manage. Assoc. 2013;63:136-149.
Harrison RM, Jones AM, Gietl J, Yin J, Green DC. Estimation of the contributions of brake dust, tire wear, and resuspension to nonexhaust traffic particles derived from atmospheric measurements. Environ. Sci. Technol. 2012;46:6523-6529.
Abbasi S, Jansson A, Sellgren U, Olofsson U. Particle emissions from rail traffic: A literature review. Crit. Rev. Environ. Sci. Technol. 2013;43:2511-2544
Amato F, Cassee FR, Denier van der Gon HAC, et al. Urban air quality: The challenge of traffic non-exhaust emissions. J. Hazard. Mater. 2014;275:31-36
Denier van der Gon HAC, Gerlofs-Nijland ME, Gehrig R, et al. The policy relevance of wear emissions from road transport, now and in the future ? An international workshop report and consensus statement. J. Air Waste Manage. Assoc. 2013;63:136-149.
Harrison RM, Jones AM, Gietl J, Yin J, Green DC. Estimation of the contributions of brake dust, tire wear, and resuspension to nonexhaust traffic particles derived from atmospheric measurements. Environ. Sci. Technol. 2012;46:6523-6529.
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UCI(KEPA) : I410-ECN-0101-2019-539-000920675