2020http://repository.president.ac.id/xmlui/handle/123456789/40622024-03-29T12:53:52Z2024-03-29T12:53:52ZHot forgeability of SCr420 low-alloy steel for piston rod applicationAnggraini, LidyaH Kartomihttp://repository.president.ac.id/xmlui/handle/123456789/117492024-01-25T03:37:42Z2020-01-01T00:00:00ZHot forgeability of SCr420 low-alloy steel for piston rod application
Anggraini, Lidya; H Kartomi
Microstructure development and mechanical property of SCr420 low-alloy steel
(equivalent to AISI 5120) obtained by the forging process have been investigated. The
relationship between the forgeability and mean grain sizes were examined. The type of forging
was carried out by die-forging at a temperature of around 1150 - 1190°C using a machine tonnage
of 1600 tons capacity with 2 times forging variation. The high aspect ratio can be maintained
through the steel forming applied for piston rod by the hot forging process. Vicker's hardness
mechanical tests in initial and forged conditions were carried out at room temperature. The
results demonstrate that the Vickers hardness of initial condition of 254.5 HV is much higher in
comparison with the hot-forged material of 152.6 HV. The forged low-alloy steel processes the
desired ferrite-pro eutectoid and pearlite microstructures, when followed by normalizing process,
and deformation are achieved.
International Conference on Renewable Energy (ICORE) 2019; Journal of Physics: Conference Series; p. 1-6.
2020-01-01T00:00:00ZAluminum Alloy Piston Fabrication Technology by Super Forging-KIRIUAnggraini, LydiaAdelya Anjanyhttp://repository.president.ac.id/xmlui/handle/123456789/117432024-01-25T02:11:08Z2020-01-01T00:00:00ZAluminum Alloy Piston Fabrication Technology by Super Forging-KIRIU
Anggraini, Lydia; Adelya Anjany
This research aims to produce pistons a lighter and stronger piston, even in high
compression and high engine speed conditions. The piston fabrication process is carried out by
super forging using Aluminum as a raw material with a compound choice by Silicon or
Magnesium. In addition, the outer layer of the piston is covered by molybdenum with the coating
process as nanotechnology to prevent corrosion. Furthermore, the finishing is controlled by the
programming system machine named CNC (Computerized Numerical Control). In addition to
CNC, the automation system is carried out by the KIRIU machine which is also used in this
study. The results of this study show that the use of Al-Si alloy base material has better piston
quality and able to withstand high compression or high engine speed. Then, the Al-Si
superforging piston compared to the two final automation processes of CNC and KIRIU. The
evaluation results have proved that the KIRIU machine provides high accuracy and the actual
production increases by 20% compared to CNC.
International Conference on Advanced Materials and Technology; IOP Conf. Series: Materials Science and Engineering 924 (2020); p.1-7.
2020-01-01T00:00:00ZNew culinary trends based on the most popular Instagram accountsPermatasari, Anggraeni; et all.http://repository.president.ac.id/xmlui/handle/123456789/115642023-06-05T10:00:00Z2020-01-01T00:00:00ZNew culinary trends based on the most popular Instagram accounts
Permatasari, Anggraeni; et all.
Besides being known for its mountains and beaches, Garut district is known
for its culinary diversity. The purpose of this study was to identify Garut's culinary products
that receive the attention of citizens while being able to be used as a new icon of Garut's typ-
ical culinary business. The @jajanangarut Instagram account, as the center of information
and review of Garut culinary types and centers,. was chosen as the research subject. This
research primarily used gualitative content analysis. By paying attention to 9,400 posts.as of
June 2018, the data were then filtered into 3,624 posts in the observation period January 2018—
June 2019. The results of the study found there are 10 categories of Garut culinary types,
where snacks are the most popular, with 1,178 posts, followed bynoodles and meaiballs
Understanding Digital Industry — Noviaristanti, Hanafi & Trihanondo (eds)
@ 2020 Taylor & Francis Group, London. p. 358-361.
2020-01-01T00:00:00ZFACTORS AFFECTING FROZEN FOOD PURCHASE INTENTION DURING THE COVID-19 OUTBREAKIN INDONESIA (CASE OF GREATER JAKARTA)Chianardi, David HosannaAnggraeni Permatasarihttp://repository.president.ac.id/xmlui/handle/123456789/115632023-06-05T09:54:52Z2020-01-01T00:00:00ZFACTORS AFFECTING FROZEN FOOD PURCHASE INTENTION DURING THE COVID-19 OUTBREAKIN INDONESIA (CASE OF GREATER JAKARTA)
Chianardi, David Hosanna; Anggraeni Permatasari
In early 2020, the first case of CV19 was reported in Indonesia. Frozen food becomes a popular choice for someone who is looking for convenience and practical purpose during the pandemic. This paper aims to reveal the influence of perceived value, brand image, price fairness, product packaging, consumers’ lifestyle on frozen food purchase intention during CV19 in the Greater Jakarta area. This study used quantitative method with multiple regression analysis. An online questionnaire was distributed to respondents. The result from 154 respondents who have ever bought frozen food during CV19 was collected as the primary data. In the data collection process, the convenience and snowball sampling technique were utilized. For data analysis, the researcher used multiple regression analysis. The result shows that perceived value, product packaging, and consumers’ lifestyle significantly influence purchase intention towards frozen food during CV19. However, brand image and price fairness don’t influence purchase intention towards frozen food during CV19.
The 4th International Conference on Family Business and Entrepreneurship, 2020. p. 412-428.
2020-01-01T00:00:00Z