http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Z. Leman (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
A review of the application of acoustic emission technique in engineering
S. Gholizadeh,Z. Leman,B.T.H.T. Baharudin 국제구조공학회 2015 Structural Engineering and Mechanics, An Int'l Jou Vol.54 No.6
The use of acoustic emission (AE) technique for detecting and monitoring damages and the progress on damages in different structures is widely used and has earned a reputation as one of the most reliable and well-established technique in non-destructive testing (NDT). Acoustic Emission is a very efficient and effective technology used for fracture behavior and fatigue detection in metals, fiberglass, wood, composites, ceramics, concrete and plastics. It can also be used for detecting faults and pressure leaks in vessels, tanks, pipes, as well as for monitoring the progression of corrosion in welding. This paper reviews major research developments over the past few years in application of acoustic emission in numerous engineering fields, including manufacturing, civil, aerospace and material engineering.
-
M. R. M. Huzaifah,S. M. Sapuan,Z. Leman,M.R. Ishak 한국섬유공학회 2019 Fibers and polymers Vol.20 No.9
The aim of this research is to investigate the effect of soil burial on physical, mechanical and thermal properties ofsugar palm fibre (SPF) reinforced vinyl ester (VE) composites. Neat VE and SPF/VE composites at weight ratio of 10 wt.%SPF were prepared using wet hand lay-up method. The specimens were buried in the soil for 0, 200, 400, 600, 800 and 1000hours to investigate the effect of soil burial to its physical properties (i.e. water absorption), mechanical properties (i.e. tensile,flexural and impact strength) and thermal properties. Obtained results indicated that, the longer soil burial period led to highwater absorption of the composites. After 200 hours of soil burial, the SPF/VE composites water uptake increased 0.92 %compared to neat VE which is 0.42 %. Based on the results, soil burial reduces the mechanical strength of the composites. Tensile, flexural and impact strength decreased rapidly after 200 hours of soil burial compared to neat VE which were28.24 %, 8.04 % and 14.83 %, respectively. Thermal stability after 200 hours of soil burial increase temperature onset of theSPF composites compared to neat VE. Overall, soil burial increased water absorption, temperature onset of the SPFcomposites and at the same time decreased the tensile, flexural and impact strength of the composites.
-
M. R. M. Huzaifah,S. M. Sapuan,Z. Leman,M.R. Ishak 한국섬유공학회 2019 Fibers and polymers Vol.20 No.5
In this research, the variation of mechanical properties (i.e. tensile, flexural and impact strength), physicalproperties (i.e. water absorption, SEM and thickness swelling) and thermal properties of sugar palm fibre reinforced vinylester composites were investigated. The composites with different fibre content, which are 10 wt.%, 20 wt.%, 30 wt.% and40 wt.%, were prepared. The additions of sugar palm fibres to vinyl ester reduce tensile and flexural strength of thecomposites, which are 25.1 MPa (10 wt.%), 12.5 MPa (20 wt.%), 9.7 MPa (30 wt.%) and 6.1 MPa (40 wt.%) for tensilestrength, while for flexural strength, the results recorded 48.5 MPa, 24 MPa, 18.8 MPa and 2.5 MPa for 10 wt.%, 20 wt.%,30 wt.% and 40 wt.%. However, sugar palm fibres improve impact strength of the composites especially at 30 wt% with5.4 kJ/m2. The addition of sugar palm fibres also raise the water absorption and thickness swelling of the composites as thepresence of fibres in the composites increase water retained in the composites. Besides that, thermal stability of thecomposites also reduces by the addition of the sugar palm fibres that shows the onset temperature of thermal degradation of10 wt.% was at 270.83 oC, while 40 wt.% was at 196.67 oC.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
