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All Journal Jurnal Ilmiah Teknik Mesin Journal of Economic, Bussines and Accounting (COSTING)
Irsyad Haryono Aulia, Irsyad Haryono
Lampung University
Economics, Econometrics & Finance Mechanical Engineering

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Effect Of Slab Thickness On Weld Distortion Results In Medium Carbon Steel AISI 1045 By SMAW Method Aulia, Irsyad Haryono; Tarkono, .; Zulhanif, .
Jurnal Ilmiah Teknik Mesin FEMA Vol. 1 No. 3 (2013)
Publisher : FT UNILA

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Abstract

This research aimed to investigate the effect of width plate variation to distortion caused by welding in AISI 1045 light steel alloy plate. This kinds of steel is formable by heat treatment and often for making mechanical component use. Sometimes repairing mechanical component was done by welding. The deformation that occurred by welding are caused by distortion. Distortion is shape transformation proccess of welding result which caused by unbalance between expanding metal while heating and shrink while colding.This research takes places in Bureau of Work and Training (BLK) Bandar Lampung, for making the test specimen and distortion measurement, while the hardness test and microstructure test held in Material Laboratory Lampung University. Before testing the specimen, first of all the steel must be welded well, using Shielded Metal Arc Welding (SMAW) method. The electrode which used for welding is E 6013 RB 26, while the joint are V form with 80 A electric current. The welding region that will be the sample data test are base metal, HAZ, and weld metal for hardness test and microstructure test. The variation of plate width are 2, 5, 8 mm.From the result of testing materials, we can make some conclution which is, the largest distortion level experienced by plate occurred in 8 mm width of plate, while  the largest hardness number experienced by plate occurred in base metal region with 57,5 HRC number. Although, the 8 mm width of plate is the most thick of all specimen, the hardness number in HAZ refgion has the smallest number of hardness. Keywords: distortion, plate, light steel, SMAW
MODEL PENILAI SAHAM: SEBUAH SYSTEMATIC LITERATURE REVIEW Aulia, Irsyad Haryono; Ruhiyat, Endang; Nofryanti, Nofryanti
Journal of Economic, Bussines and Accounting (COSTING) Vol. 9 No. 1 (2026): COSTING : Journal of Economic, Bussines and Accounting
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/h9z2wf13

Abstract

This study aims to review and synthesize empirical findings on the use of asset pricing models in portfolio analysis, including the Capital Asset Pricing Model (CAPM), Fama–French models (three- and five-factor), the Carhart four-factor model, and the Arbitrage Pricing Theory (APT), over the period 2014–2025. The research employs a Systematic Literature Review (SLR) with a qualitative approach, conducted through systematic identification, selection, quality assessment, and synthesis of relevant national and international scholarly articles. The results indicate that no single asset pricing model demonstrates universal superiority across all market conditions. CAPM remains widely applied due to its simplicity and ease of implementation, although its explanatory power is often limited in dynamic markets. Multifactor models such as Fama–French and Carhart generally provide stronger explanatory power, particularly in developed markets, but yield inconsistent results in emerging markets, including Indonesia. Meanwhile, APT offers greater flexibility in factor selection but faces challenges in identifying empirically stable and relevant risk factors. This study concludes that differences in market characteristics, investor behavior, macroeconomic conditions, and research methodologies are the main sources of empirical inconsistency across asset pricing models. These findings imply that the selection of asset pricing models should be context-dependent and aligned with analytical objectives, highlighting the importance of comparative and contextual approaches in portfolio analysis within the Indonesian capital market.
Co-Authors . Tarkono, . . Zulhanif Nofryanti, Nofryanti Ruhiyat, Endang