Sustainability assessment in the steel industry using partial least squares - Structural equation model

A., Juan E. Villalva

doi:10.1016/j.wds.2023.100054

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…Öte yandan, ölçüm modeli, gözlenen ve gizil değişkenler arasındaki ilişkiyi açıklamak ve gözlenen değişkenlerin gizli değişkenler üzerindeki etkisini ölçmek için kullanılan doğrulayıcı faktör analizidir [40]. Yapısal modelin doğrulanması, onu tahmin eden yapılar tarafından açıklanan içsel değişkenin varyans miktarını doğrular [41].…”

Section: Yapısal Eşitlik Modeliunclassified

The Effect of Company Qualifications on Sustainable Supply Chain Management: Textile Sector Perspective

Yontar

ZENGİN

2023

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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Kaynak kullanımının yoğun olduğu bilinen tekstil sektörü için sürdürülebilirlik çalışmalarının uygulanması ekonomik anlamda sektörün gelişmesini sağlayarak çevresel ve sosyal anlamda tedarik zinciri yönetiminin aşamalarında olumlu etki bırakacağı yadsınamaz bir gerçektir. Tedarik zinciri yönetiminde sürdürülebilirliğin sağlanması için ele alınması gereken çok sayıda parametre bulunmaktadır. Tekstil sektörü ihtiyaçları doğrultusunda sürdürülebilirliği amaçlayan firmaların bu parametrelere göre ilerlemesi olası kaynak kayıplarını daha da azaltacaktır. Mevcut çalışma bu konuyu ele alarak tedarik zinciri yönetimi içerisinde sürdürülebilirliği etkileyen değişkenlerin araştırılmasını amaçlamaktadır. Firmaların sahip olduğu niteliklerin değişkenlerine göre belirlenen müşteri odaklı yaklaşım, teslimat odaklı yaklaşım, kaynak kullanımı ve ürün odaklı yaklaşım değişkenleri ile aralarındaki ilişki Yapısal Eşitlik Modeli ile ele alınmıştır. Çalışmada belirlenen 35 değişken beş gizli değişken içerisinde gruplandırılarak çıkan değerlerin etki düzeyleri belirlenmiştir. Etkili risk yönetimi, müşteri isteklerinin yerine getirilmesi, sipariş takibi, dönüştürülebilen ambalajın kullanılması, tahmin tekniklerinin doğruluğu değişkenlerinin etki düzeyleri en yüksek değişkenler olarak çıkmıştır.

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Section: Yapısal Eşitlik Modeliunclassified

The Effect of Company Qualifications on Sustainable Supply Chain Management: Textile Sector Perspective

Yontar

ZENGİN

2023

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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“…At the same time, the steel industry produces a significant amount of CO 2 in its production. It is estimated that its CO 2 emissions in 2019 were about 2.6 billion tons, accounting for 7% of global energy system emissions [7]. Because of the complex composition of steel slag, the utilization ratio of steel slag is always low.…”

Section: Introductionmentioning

confidence: 99%

Effect of Carbonation Treatment on the Properties of Steel Slag Aggregate

Ma,

Dai,

Jiang

et al. 2023

Materials

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Steel slag is the waste slag generated after steel smelting, which has cementitious activity. However, untreated steel slag can damage the integrity of steel slag concrete due to its harmful expansion. This study prepared porous aggregates by mixing powdered steel slag, fly ash, and cement and carbonated them with CO2 under high pressure conditions (0.2 MPa). The effect of carbonation on the performance of steel slag aggregate was studied using volume stability and crushing value. The effect of different carbonation conditions on the products was studied using X-ray diffraction (XRD) and thermogravimetric (TG) analyses, and the carbon sequestration efficiency of steel slag under different treatment methods was quantitatively evaluated. The research results indicate that untreated steel slag was almost completely destroyed and lost its strength after autoclave curing. With the increase in temperature and carbonation time, the performance of steel slag aggregate gradually improved and the pulverization rate, expansion rate, and crushing value gradually decreased. According to the experimental results of XRD and TG, it was found that the reaction between f-CaO (free CaO) and CO2 in steel slag generated CaCO3, filling the pores inside the aggregate, which was the internal reason for the improvement of aggregate performance. After comparison, the best carbonation method was maintained at 55 °C for 72 h. After carbonation, the steel slag aggregate had a pulverization rate of 2.4%, an expansion rate of 0.23%, a crushing value of 23%, and a carbon sequestration efficiency of 11.27% per unit weight of aggregate.

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Investigation of the effects of beam oscillations in electron beam–welded S1100M TMCP steel

Sisodia,

Gáspár,

Ghosh

et al. 2024

Weld World

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The development of thermomechanically controlled processed (TMCP) high-strength steel (HSS) has significantly contributed to designing and developing the intricate structural components. It has broader applications in the cranes and lifting process industry (base frame, crane jibs, and crane columns), trailers, agricultural and forestry machinery, earth-moving equipment, etc. However, the development of new-grade steels with higher tensile strength led to higher requirements for welded joints, and the associated weldability issues have inspired detailed studies on electron beam welding (EBW) with different beam oscillations. Beam oscillation application with EBW processes improves the welding efficiency, weld quality, weld geometry, keyhole, etc., affecting the welded joints mechanical and microstructural properties. Thus, the present study investigates the impact and comparison of various beam oscillations on the microstructural and mechanical properties of EB-welded S1100M steel. The influence of welding parameters on the microstructure of welded joints was analyzed using a scanning electron microscope (SEM) and electron backscattered diffraction (EBSD). The analysis focused on evaluation of grain sizes, morphologies, distributions, and crystallographic orientations of different phase constituents in fusion zone (FZ) and heat-affected zone (HAZ). The mechanical properties were analyzed using hardness, tensile, and Charpy V-notch impact tests. The texture in the FZ is typically random, while the HAZ typically exhibits a strong rolling texture. In general, the cooling rate in EBW is very fast, possibly resulting in a fine-grained structure and reduced formation of coarse second-phase particles in the weld zone. The elliptical beam oscillation showed the highest hardness in HAZ 450 HV10. Elliptical beam oscillation slightly improves the welded joint’s tensile strength, and the impact test showed mixed fracture behavior.

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Sustainability assessment in the steel industry using partial least squares - Structural equation model

Cited by 4 publications

References 7 publications

The Effect of Company Qualifications on Sustainable Supply Chain Management: Textile Sector Perspective

The Effect of Company Qualifications on Sustainable Supply Chain Management: Textile Sector Perspective

Effect of Carbonation Treatment on the Properties of Steel Slag Aggregate

Investigation of the effects of beam oscillations in electron beam–welded S1100M TMCP steel

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