Ditemukan 7 dokumen yang sesuai dengan query
Suhariyanto
"
Untuk mengetahui pengaruh Cu dan Zn terhadap paduan Al-Si-Mg maka dibuat Sampel I dan Sampel II. Sampel I paduan Al-Si-Mg dengan variasi persen berat (%wt) Cu sebesar : 0 ; 1,5 ; 3 dan 5 %wt sedang Zn dibuat konstan sebesar 1 %wt. Sampel II paduan Al-Si-Mg dengan variasi persen berat Zn sebesar : 0 ; 0,5 dan 1,5 %wt, sedang Cu dibuat konstan sebesar 3 %wt.
Selanjutnya dilakukan pengujian terhadap sampel-sampel tersebut, yaitu, pengujian : ...
"
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1997
T-Pdf
UI - Tesis Membership Universitas Indonesia Library
Suryadi
"
The present study investigated the mechanical properties and microstructure of ultrafine grained (UFG) brass processed by four passes of equal channel angular pressing (ECAP) and annealed at elevated temperatures. The mechanical properties of all samples were assessed using tensile and micro-hardness tests. Microstructure analysis was performed using optical microscopy (OM) and scanning electron microscopy (SEM). Ultimate tensile strengths (UTS) and yield strengths (YS) of 878 and 804 MPa, respectively, ductility of 15%, and hardness of ...
"
Depok: Faculty of Engineering, Universitas Indonesia, 2017
UI-IJTECH 8:1 (2017)
Artikel Jurnal Universitas Indonesia Library
Arun Kumar
"
This work investigates the fresh, mechanical and durability properties of normal, Self-Compacting Concrete (SCC) and Smart Dynamic Concrete (SDC), which are a new generation of concrete with a lower amount of cementitious content. SDC is a low-fine, self-compacting concrete, that combines the benefits of normal concrete (stability) and self-compacting concrete (fresh properties). Fresh properties such as slump flow, L-box and V-funnel tests were investigated to evaluate its self-compacting properties. Mechanical properties such as compressive, splitting ...
"
Depok: Faculty of Engineering, Universitas Indonesia, 2018
UI-IJTECH 9:4 (2018)
Artikel Jurnal Universitas Indonesia Library
Cucuk Nur Rosyidi
"
A mechanical assembly consists of several components to perform an intended function. At the design stage, the intended function must be converted into critical product dimensions. After determining the dimensions, a designer must determine the assembly tolerance and allocate this tolerance to the tolerances of the corresponding components. After determining the optimal tolerances, process selection must be conducted along with production allocation to the selected process. There are three aspects in commercial competition that must ...
"
Depok: Faculty of Engineering, Universitas Indonesia, 2016
UI-IJTECH 7:5 (2016)
Artikel Jurnal Universitas Indonesia Library
Hairul Abral, Author
"
In the present study, natural fibers located in thick outer woody rinds of the metroxylon sago (MS) tree were investigated. The investigation focused on measuring the mechanical properties and observing the microstructures of MS fibers before and after treatment with 5% sodium hydroxide. A scanning electron microscope was used to observe the microstructure of MS fiber, and the results showed that there was a decrease in fiber diameter after mercerization. A porous structure in the ...
"
Depok: Faculty of Engineering, Universitas Indonesia, 2012
UI-IJTECH 3:1 (2012)
Artikel Jurnal Universitas Indonesia Library
Nirattisak Khongthon
"
The definition of the physical and mechanical properties of sugarcane trash pellets were necessary for the design considerations relating to storage, handling and processing equipment. The mixing ratios of ground sugarcane trash:cassava starch:water content (1.0:0.25:0.85 and 1.0:0.25:1.40 by weight) and pelleting speeds (100, 120, 140, and 160 rpm) were considered to determine their effects on bulk density, true density, porosity, durability and compressive strength. The results show that the mixing ratio by weight of 1.0:0.25:0.85 ...
"
Depok: Faculty of Engineering, Universitas Indonesia, 2016
UI-IJTECH 7:7 (2016)
Artikel Jurnal Universitas Indonesia Library
Akhmad Ardian Korda
"
The kinetics of strain aging behavior of API 5L X65 and API 5L B steel types on long-term operations were studied. Pre-strain was applied to the two steel types and the process was continued with the aging process at various temperatures and over various time periods. Mechanical properties data were used to determine activation energy levels. The results showed that API 5L B steel has a lower activation energy level than API 5L X65 steel ...
"
Depok: Faculty of Engineering, Universitas Indonesia, 2016
UI-IJTECH 7:3 (2016)
Artikel Jurnal Universitas Indonesia Library
