Influence of some Oxide Coating Layers on the Mechanical Properties of Steel Plates

2015 ◽  
Vol 1111 ◽  
pp. 91-96 ◽  
Author(s):  
Liviu Bereteu ◽  
Mircea Vodă ◽  
Doru Romulus Pascu ◽  
Eva Nyaguly
Keyword(s):  
Mechanical Properties ◽  
Metal Oxides ◽  
Oxide Coating ◽  
Steel Plates ◽  
Coated Steel ◽  
Fast Fourier Transform Algorithm ◽  
Coating Materials ◽  
Coating Layers ◽  
Non Destructive ◽  
External Impulse

The paper presents a vibroacoustic method to determining the stiffness of coated steel with various materials such as metal oxides, metallic paints, polymers etc and Young's modulus for coating materials. The method consists in measuring the dynamic response of the steel in the form of a rectangular bar subjected to external impulse. One of the latest non-destructive experimental techniques in this field is based on the analysis of vibrating signal response recorded with a condenser microphone. A Fast Fourier Transform algorithm is used for processing the sampled signals. Knowing the mechanical properties of steel plates prior to coating with metal oxides, and determining the same properties after coating, can be obtained the mechanical properties of metal oxides and their influence on the properties of the ensemble.

scholarly journals Effect of Inorganic Filler Addition on Non-Combustible and Mechanical Properties of Color Coated Steel Sheets

2020 ◽  
Vol 58 (11) ◽  
pp. 768-775
Author(s):  
Moon-Hi Hong ◽  
In-kyu Kim ◽  
Hye-Jeong Yun
Keyword(s):  
Mechanical Properties ◽  
Large Scale ◽  
Salt Spray ◽  
Galvanized Steel ◽  
Inorganic Filler ◽  
Coated Steel ◽  
Coating Materials ◽  
Steel Sheets ◽  
Glow Discharge Spectroscopy ◽  
Coated Layer

Recent large-scale fires in buildings and logistic warehouses have become a major social issue, involving both property loss and multiple casualties. To make color coated steel sheets non-combustible and/or have anti-fire properties, various ways of optimizing manufacturing parameters have been investigated for outer, inner, roof and ceiling panels. In the present study, the effect of inorganic filler content and size on the non-combustible and mechanical properties of color coated steel sheets has been investigated using samples prepared as pre-painted coating materials. Both salt spray corrosion and chemical resistance tests were also carried out. Filler distribution and size were measured by optical microscopy, scanning electron microscopy and glow discharge spectroscopy, and found to be critical factors affecting non-combustible performance. As the amount of added filler increased, the non-combustible property of the color coated steel sheets improved, while mechanical properties, corrosion resistance by salt spray and chemical resistances deteriorated. During 3t-bending tests, the adhesive strength at the interface between coated layer and hot dip galvanized steel sheets was rather strong, although the filler-added upper coated layer was mostly peeled off. The mechanical properties of 30% filler addition samples were compared to samples with less than 20% filler addition. The main reason for the poorer performance was clarified in terms of filler size and crack propagation in the 3t-bended color coated layer.

scholarly journals Investigation of Mechanical Properties of Butt Joint Form in CMT-Brazed Joints of DP800 Thin Zinc Coated Steel Plates Using Different Torch Angles

2020 ◽  
Vol 3 (1) ◽  
pp. 215-219
Author(s):  
İbrahim Acar ◽  
Cihan Yakupoğlu ◽  
Faruk Varol ◽  
Salim Aslanlar
Keyword(s):  
Mechanical Properties ◽  
Butt Joint ◽  
Steel Plates ◽  
Coated Steel ◽  
Brazed Joints ◽  
Zinc Coated Steel ◽  
Joint Form

Bu çalışmada,1 mm kalınlığındaki DP800 (Çift Fazlı) çelik plakalar bakır esaslı (CuAl8) ilave tel kullanılarak CMT-lehimleme (Soğuk Metal Transferi) tekniği ile birleştirilmiştir. Numuneler alın birleştirme formunda hazırlanmıştır. CMT-lehimleme işlemi torç açıları 500, 600, 700, 800 ve 900 olmak üzere 5 farklı değerde yapılmıştır. Dolgu metali olarak büyük oranda bakırdan oluşan CuAl8 teli kullanılmıştır. CMT-lehimleme işlemi gerçekleştirildikten sonra; numunelerin gerilme özellikleri saptanmış ve DP800 çelik sacının CMT-lehimleme tekniği ile birleştirilebilirliğini görmek için birleşme noktalarının mikro ve makro görüntüleri incelenmiştir.

scholarly journals Investigation of Mechanical Properties of Overlap Joint Form in CMT-Brazed Joints of DP800 Thin Zinc Coated Steel Plates Using Different Torch Feed Rates

2020 ◽  
Vol 3 (1) ◽  
pp. 209-214
Author(s):  
İbrahim Acar ◽  
Cihan Yakupoğlu ◽  
Faruk Varol ◽  
Erman Ferik ◽  
Salim Aslanlar
Keyword(s):  
Mechanical Properties ◽  
Steel Plates ◽  
Coated Steel ◽  
Overlap Joint ◽  
Brazed Joints ◽  
Zinc Coated Steel ◽  
Joint Form

Bu çalışmada,1 mm kalınlığındaki DP800 (Çift Fazlı) çelik plakalar bakır esaslı (CuAl8) ilave tel kullanılarak CMT-lehimleme (Soğuk Metal Transferi) tekniği ile birleştirilmiştir. Numuneler bindirme birleştirme formunda hazırlanmıştır. CMT-lehimleme işlemi, torç ilerleme hızları 21, 24, 27, 34 ve 39 cm/dk olmak üzere 5 farklı değerde yapılmıştır. Dolgu metali olarak büyük oranda bakırdan oluşan CuAl8 teli kullanılmıştır. CMT-lehimleme işlemi gerçekleştirildikten sonra; numunelerin gerilme özellikleri saptanmış ve DP800 çelik sacının CMT-lehimleme tekniği ile birleştirilebilirliğini görmek için birleşme noktalarının mikro ve makro görüntüleri incelenmiştir.

Cracking at the fold in double layer coated paper: the influence of latex and starch composition

TAPPI Journal ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 93-99
Author(s):  
SEYYED MOHAMMAD HASHEMI NAJAFI ◽  
DOUGLAS BOUSFIELD, ◽  
MEHDI TAJVIDI
Keyword(s):  
Mechanical Properties ◽  
Double Layer ◽  
Starch Content ◽  
Single Layer ◽  
Double Layers ◽  
Coated Paper ◽  
Coated Papers ◽  
Coating Layers ◽  
Scanned Images ◽  
Packaging Paper

Cracking at the fold of publication and packaging paper grades is a serious problem that can lead to rejection of product. Recent work has revealed some basic mechanisms and the influence of various parameters on the extent of crack area, but no studies are reported using coating layers with known mechanical properties, especially for double-coated systems. In this study, coating layers with different and known mechanical properties were used to characterize crack formation during folding. The coating formulations were applied on two different basis weight papers, and the coated papers were folded. The binder systems in these formulations were different combinations of a styrene-butadiene latex and mixtures of latex and starch for two different pigment volume concentrations (PVC). Both types of papers were coated with single and double layers. The folded area was scanned with a high-resolution scanner while the samples were kept at their folded angle. The scanned images were analyzed within a constant area. The crack areas were reported for different types of papers, binder system and PVC values. As PVC, starch content, and paper basis weight increased, the crack area increased. Double layer coated papers with high PVC and high starch content at the top layer had more cracks in comparison with a single layer coated paper, but when the PVC of the top layer was low, cracking area decreased. No measurable cracking was observed when the top layer was formulated with a 100% latex layer.

Sunlight exposure: the effects on the performance of paragliding fabric

2018 ◽  
Vol 69 (05) ◽  
pp. 381-389
Author(s):  
MENGÜÇ GAMZE SÜPÜREN ◽  
TEMEL EMRAH ◽  
BOZDOĞAN FARUK
Keyword(s):  
Mechanical Properties ◽  
Aging Process ◽  
Air Permeability ◽  
Sunlight Exposure ◽  
Test Results ◽  
Coating Materials ◽  
Strength Tests ◽  
Before And After ◽  
The Relationship ◽  
Dark Blue

This study was designed to explore the relationship between sunlight exposure and the mechanical properties of paragliding fabrics which have different colors, densities, yarn counts, and coating materials. This study exposed 5 different colors of paragliding fabrics (red, turquoise, dark blue, orange, and white) to intense sunlight for 150 hours during the summer from 9:00 a.m. to 3:00 p.m. for 5 days a week for 5 weeks. Before and after the UV radiation aging process, the air permeability, tensile strength, tear strength, and bursting strength tests were performed. Test results were also evaluated using statistical methods. According to the results, the fading of the turquoise fabric was found to be the highest among the studied fabrics. It was determined that there is a significant decrease in the mechanical properties of the fabrics after sunlight exposure. After aging, the fabrics become considerably weaker in the case of mechanical properties due to the degradation in both the dyestuff and macromolecular structure of the fiber

The Influence of Ti/N Ratio on the Effective Boron and Mechanical Properties of Low Carbon Boron Alloyed Bainitic Steel

2014 ◽  
Vol 496-500 ◽  
pp. 392-395 ◽  
Author(s):  
Tao Zhang ◽  
Hua Xing Hou ◽  
Jun Ping Chen
Keyword(s):  
Mechanical Properties ◽  
Steel Plate ◽  
Steel Plates ◽  
Bainitic Steel ◽  
Low Carbon ◽  
Obvious Effect ◽  
Ti Content

The influence of Ti/N ratio on the effective boron and mechanical properties was investigated by analyzing data from low carbon boron alloyed bainitic steel plates. The result shows Ti/N ratio varies with effective boron value. Less than 50% effective boron was obtained when Ti/N ratio is below 3.3, nearly 90% effective boron is obtained when ratio Ti/N is more than 4; Adding enough Titanium is an effective and economic way to improve qualified ratio of bainitic steel plate. The Ti content between 0.010% and 0.030% does not have obvious effect on the toughness of the bainitic steel;

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