Prediction of Mechanical Properties of ERW Pipes Considering Manufacturing Process Through Numerical Analysis

2018 ◽  
Author(s):  
Seong-Wook Han ◽  
Soo-Chang Kang ◽  
Jiwoon Yi ◽  
Ho-Kyung Kim
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Manufacturing Process ◽  
High Performance ◽  
Oil And Gas ◽  
Outer Diameter ◽  
Process Stage ◽  
Repetitive Loading ◽  
Prediction Of Mechanical Properties ◽  
Abaqus Model

Along with the development of the energy industry, demand for oil and gas pipelines has increased, and as the low oil price era has been prolonged, more economical pipe design and construction are required. Especially, ERW pipe has been expanding its range of applications, which is advantageous in terms of productivity and price. ERW pipes are made by passing through continuous rollers, where unintentional plastic deformation such as the Bauschinger effect occurs. Since plastic deformation caused by repetitive loading and unloading changes the initial properties of steel, it is necessary to precisely predict the final properties of the pipe as well as an accurate understanding of the manufacturing process. So, this study focused on evaluating the effects of manufacturing process considering plastic deformation for high performance ERW pipe manufacturing. In this paper, three manufacturing process stages of ERW pipe were simulated as 3D nonlinear finite element models using ABAQUS: forming stage, sizing stage, and flattening stage. And the ABAQUS model was verified by comparison with the outer diameter measured from full-scale size pipes. In order to maintain the continuity of analysis between each manufacturing process stage, PEEQ, Alpha and residual stress were obtained from each manufacturing process stage, and then these mechanical properties were mapped to the next manufacturing process stage. And change of mechanical properties during the each manufacturing process stage were examined. Finally, the change of material properties at the flattening stage where reverse bending occurs was evaluated, especially in influence of sizing ratio on the flattening stage. Through the developed analytical model, numerical prediction of the mechanical properties of ERW pipe is possible.

Numerical Evaluation of Mechanical Property Change and Collapse Strength of ERW Pipes Considering Manufacturing Process

2018 ◽  
Author(s):  
Seong-Wook Han ◽  
Soo-Chang Kang ◽  
Jiwoon Yi ◽  
Ho-Kyung Kim
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Analytical Model ◽  
Manufacturing Process ◽  
High Performance ◽  
Oil And Gas ◽  
Large Change ◽  
Outer Diameter ◽  
Element Analysis ◽  
Collapse Strength

Along with the development of the energy industry, demand for oil and gas pipelines has increased, and as the low oil price era has been prolonged, more economical pipe design and construction are required. Typical examples are ERW pipes used as OCTG or reel-lay pipeline. The ERW pipe is made by passing the plate through continuous rollers, where repetitive loading and unloading causes unintentional plastic deformation and changes in initial steel properties. So, this study focused on both the change of mechanical properties during manufacturing process and collapse strength of ERW pipe considering the Bauschinger effect in order to produce more economical and high performance steel pipe. In this paper, the ERW manufacturing process was divided into three stages: forming station, sizing station, and flattening station. The ERW manufacturing process was simulated as 3D nonlinear finite element models using ABAQUS (6.14-1). Then, the change of mechanical properties at each process station was examined through finite element analysis and PEEQ, Alpha, and residual stress in each process station were evaluated for maintaining continuity of analysis. And flattening station where the reverse bending gives a large change in the mechanical properties was also performed. Finally, the collapse strength of the ERW pipe was evaluated in consideration of the change in compression strength during the manufacturing process. The ABAQUS analytical model was verified by showing analytical results to be identical with the outer diameter measured from the full-scale size pipes. Using the developed analytical model, it is possible to numerically predict the mechanical properties and collapse strength of ERW pipe.

Effect of Full- and Small-Scale Reeling Simulation on Mechanical Properties of Weldable 13Cr Seamless Line Pipe

2013 ◽  
Author(s):  
Hidenori Shitamoto ◽  
Nobuyuki Hisamune
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Oil And Gas ◽  
Small Scale ◽  
Line Pipe ◽  
Offshore Pipeline ◽  
Oil And Gas Pipelines ◽  
Before And After ◽  
Offshore Oil And Gas ◽  
Offshore Oil

There are several methods currently being used to install offshore oil and gas pipelines. The reel-lay process is fast and one of the most effective offshore pipeline installation methods for seamless, ERW, and UOE line pipes with outside diameters of 18 inches or less. In the case of the reel-laying method, line pipes are subjected to plastic deformation multiplication during reel-laying. It is thus important to understand the change of the mechanical properties of line pipes before and after reel-laying. Therefore, full-scale reeling (FSR) simulations and small-scale reeling (SSR) simulations are applied as evaluation tests for reel-laying. In this study, FSR simulations were performed to investigate the effect of cyclic deformation on the mechanical properties of weldable 13Cr seamless line pipes. Furthermore, SSR simulations were performed to compare the results obtained by FSR simulations.

scholarly journals Mechanical Characterization of Rapid Solidified Alsicumg Alloys by New CRSS Casting Method Under T6 Condition

2019 ◽  
Vol 8 (12) ◽  
pp. 2897-2902
Keyword(s):  
Mechanical Properties ◽  
Manufacturing Process ◽  
High Performance ◽  
Weight Ratio ◽  
Solidification Process ◽  
Casting Process ◽  
Casting Method ◽  
Silicon Alloys ◽  
Hardness Tester

Aluminum-silicon alloys acquiring extensive industrial attention due to their superior resistance to rate of wear and elevated strength to weight ratio properties. Though the properties of the materials substantially depend on the manufacturing process they involve. Thus many industries focusing on new manufacturing methods to produce high-performance alloys. In this present study, AlSi (16-18) alloys were prepared by new CRSS (combined rheo stir squeeze) casting method with rapid-solidification process under T-6 condition. CRSS-T6 as casting process enhances the microstructural and mechanical properties significantly by 40-70%. Whereas, the maximum value of hardness (179.37) was found with AlSi17Cu3.5Mg0.8 with CRSS-T6. The improvements in hardness and elastic properties were mainly ascribed to size, distribution, and morphology of Si-particles because of its manufacturing process. SEM, advanced metallurgical microstructure and EDS analysis techniques are used for the surface morphologies observation. Moreover, Brinell hardness tester and Tensometer are used for the characterization of mechanical properties

scholarly journals Elastic Properties of Thermo-Hydro-Mechanically Modified Bamboo (Guadua angustifolia Kunth) Measured in Tension

2014 ◽  
Vol 600 ◽  
pp. 111-120 ◽  
Author(s):  
Hector Fabio Archila-Santos ◽  
Martin Philip Ansell ◽  
Peter Walker
Keyword(s):  
Mechanical Properties ◽  
High Performance ◽  
Sheet Material ◽  
Construction Materials ◽  
Uniform Density ◽  
Structural Applications ◽  
Saturated Sample ◽  
Prediction Of Mechanical Properties ◽  
Water Saturated ◽  
Poissons Ratio

Guadua angustifolia Kunth (Guadua) was subjected to thermo-hydro-mechanical (THM) treatments that modified its microstructure and mechanical properties. THM treatment was applied to Guadua with the aim of tackling the difficulties in the fabrication of standardised construction materials and to gain a uniform fibre density profile that facilitates prediction of mechanical properties for structural design. Dry and water saturated Guadua samples were subjected to THM treatment. A densified homogenous flat sheet material was obtained. Mechanical properties of small clear specimens of THM modified Guadua were evaluated by testing in tension and compared to the results of the same test on a control specimen. Samples were tested in the elastic range to determine values for Modulus of Elasticity (MOE) and Poissons ratio. There was a significant increase in the tensile MOE values (parallel to the direction of the fibres) for densified samples. MOE values measured were 16.21 GPa, 22.80 GPa and 31.04 GPa for control, densified dry and densified water saturated samples respectively. Oven dry densities for these samples were 0.54 g/cm3, 0.81 g/cm3 and 0.83 g/cm3. Despite a 50 % reduction in the radial Poissons ratio for the water saturated sample, no further variation in the Poissons ratio as a result of densification was observed for control and densified dry samples. This paper presents the results of the first phase of a study focussed on the manufacturing of flat Guadua sheet (FGS) by THM treatment and the characterization of its mechanical properties. The achievement of a dimensionally stable FGS by THM modification, with a uniform density and achieved with reduced labour effort during manufacture, will be of key importance for the development of structural applications, and could have a significant impact in the bamboo industry. The final aim of the research at the University of Bath is the development of Cross Laminated Guadua (CLG) panels using THM modified and laminated FGS glued with a high performance resin.

scholarly journals Prediction of Mechanical Properties of Ti-6Al-4V Using Neural Network

2010 ◽  
Vol 89-91 ◽  
pp. 443-448
Author(s):  
Yan Pratama Detak ◽  
Junaidi Syarif ◽  
R. Ramli
Keyword(s):  
Neural Network ◽  
Mechanical Properties ◽  
Gradient Descent ◽  
High Performance ◽  
Room Temperature ◽  
Chemical Compositions ◽  
Training Algorithm ◽  
Prediction Of Mechanical Properties ◽  
Methods Of Learning ◽  
Lm Algorithm

Objective of this study is to develop simulation for predicting mechanical properties of Ti-6Al-4V alloy. Rockwell Hardness (HRC), Ultimate tensile strength (UTS) and elongation (ε) are predicted by using Neural Network (NN) with multilayer feedforward architecture. The input of simulations are chemical compositions of Ti-alloy at room temperature. The data of the mechanical properties which are reported by other researchers are used for the NN training and Gradient Descent (GD) and Lavenberg Marquardt (LM) are applied as methods of learning algorithms. The results of training by both methods are compared in order to obtain high performance of output criteria which are determined by a Normalized Root Mean Square Error (NRMSE). is used to determine the performance of output criteria. In training, the NRMSE output calculated by GD algorithm show that HRC, UTS and ε are 0.024, 0.0717 and 0.1375 respectively, while LM algorithm for HRC, UTS and ε are 0.0207, 0.0689 and 0.1150, respectively. The NRMSE predicted output of GD algorithm for HRC, UTS, and ε are 0.0658, 0.0338 and 0.2994, while LM algorithm for HRC, UTS and ε are 0.0371, 0.1192 and 0.5487 respectively. In training, values of NRMSE calculated by LM algorithm is smaller than GD algorithm. These results suggest that LM algorithm shows excellent ability for training, however the GD method is more appropriate for the training algorithm in order to obtain a high performance of output criteria. It can be concluded that the NN can be applied for predicting mechanical properties of Ti-6Al-4V alloys.

Role of Modelling in the Development of High Performance Steels for Important Engineering Applications

2013 ◽  
Vol 794 ◽  
pp. 493-501
Author(s):  
Palla V. Sivaprasad ◽  
Narendra Girase ◽  
Supriya Sarkar ◽  
Olle Wijk
Keyword(s):  
Modeling And Simulation ◽  
Manufacturing Process ◽  
High Performance ◽  
Manufacturing Industry ◽  
Oil And Gas ◽  
Optimum Process ◽  
Manufacturing Processes ◽  
Tube Extrusion ◽  
Increasing Demand ◽  
Experimental Trials

Stainless steels of different types and grades are being developed world over to meet ever increasing demand for enhanced materials performance. Advanced stainless steel products have applications in a variety of industries including nuclear, defence, space, chemical, oil and gas, medical and appliance. It is understood that the properties of the alloys strongly depend not only on the chemical composition but also on their microstructure, which in turn depends on parameters in the manufacturing process. Therefore, the challenge to the manufacturing industry is not only selection of optimum composition but also relevant manufacturing processes to meet the requirements. Designing a manufacturing process and optimum process schedules using experimental trials is both time consuming and expensive. Modeling and simulation play an important role to reduce these times effectively. This paper presents important points to be considered to produce clean steels and highlights the applicability of modeling techniques that can be effectively applied in a manufacturing industry. Some of the case studies that are included in the paper are Computational Fluid Dynamics model to understand gas atomisation Finite element modeling of compound tube extrusion In conclusion, the power of modeling and simulation to understand manufacturing processes is highlighted.

scholarly journals Performance of wearables and the effect of user behavior in additive manufacturing process

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
JuYoun Kwon ◽  
Namhun Kim
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Process Parameters ◽  
Manufacturing Process ◽  
High Performance ◽  
Essential Role ◽  
User Behavior ◽  
Process Parameter ◽  
Am Processes

AbstractAdditive manufacturing (AM) which can be a suitable technology to personalize wearables is ideal for adjusting the range of part performance such as mechanical properties if high performance is not required. However, the AM process parameter can impact overall durability and reliability of the part. In this instance, user behavior can play an essential role in performance of wearables through the settings of AM process parameter. This review discusses parameters of AM processes influenced by user behavior with respect to performance required to fabricate AM wearables. Many studies on AM are performed regardless of the process parameters or are limited to certain parameters. Therefore, it is necessary to examine how the main parameters considered in the AM process affect performance of wearables. The overall aims of this review are to achieve a greater understanding of each AM process parameter affecting performance of AM wearables and to provide requisites for the desired performance including the practice of sustainable user behavior in AM fabrication. It is discussed that AM wearables with various performance are fabricated when the user sets the parameters. In particular, we emphasize that it is necessary to develop a qualified procedure and to build a database of each AM machine about part performance to minimize the effect of user behavior.

The Influence of Sparse Filling of FDM-Printed Samples on Mechanical Properties of Polyphenylene Sulfone and a Carbon-Filled Composite Based on it

2020 ◽  
Vol 869 ◽  
pp. 550-555
Author(s):  
Azamat A. Khashirov ◽  
Azamat L. Slonov ◽  
Ismel V. Musov
Keyword(s):  
Mechanical Properties ◽  
High Performance ◽  
Oil And Gas ◽  
Printing Technology ◽  
Automotive Manufacturing ◽  
High Performance Polymers ◽  
Filled Composite ◽  
Lower Material ◽  
Composite Samples ◽  
Material Expenditure

FDM-printing technology is widely used in many fields including highly responsible industries such as aerospace, oil and gas and automotive manufacturing. Polyphenylene sulfone and its composites are one of the most common used high-performance polymers in those fields but polyphenylene sulfone is expensive and the lower material would be used for production the more applications could be able to enroot polyphenylene sulfone to their industries. Additive manufacturing opens new boundaries comparing to traditional technologies allowing to use the grid filling of parts which can help to reduce the material expenditure. In this research the influence of grid filling to mechanical properties of polyphenylene sulfone and its carbon-filled composite samples obtained using FDM-printing technology was studied. The article includes results about the effect of various grid sizes and its type on the mechanical properties of polyphenylene sulfone and its carbon-filled composite samples, and It shows the possibility of significant material savings while maintaining the required product properties.

Novel High Performance Elastomers: New, Recyclable Materials for Oil and Gas From In-Line Inspection to Pipe Coating

2012 ◽  
Author(s):  
Michael Magerstädt ◽  
Holger Schmidt ◽  
Gunther Blitz ◽  
Ralf Dopieralla ◽  
Frank Schellbach
Keyword(s):  
Mechanical Properties ◽  
Material Properties ◽  
High Performance ◽  
Oil And Gas ◽  
Alkaline Media ◽  
Polyurethane Elastomer ◽  
Polyurethane Elastomers ◽  
Acidic And Alkaline Media ◽  
The Right ◽  
Tear Resistance

Starting out from the need for polyurethanes with higher abrasion and tear resistance for pipeline inspection, an entire class of new high performance elastomers were developed. Within a few years materials were synthesized which did not only extend the mechanical properties of polyurethane elastomers, but also led to the development of completely new products. Applications range from intelligent plastic solutions combining elastomers and electronics via highly abrasion resistant pipe coatings to a new process for recycling and reuse of crosslinked polyurethanes. Fundamental to these successful developments is the “building-block” chemistry of polyurethanes. A very high number of permutations of the up to 7 components used in the synthesis of a polyurethane elastomer is possible. By choosing the right combinations and the right reaction conditions, specific material properties can be designed. Materials exhibiting the following material properties, hitherto not found in polyurethanes, were developed: • An operating temperature range from −50 to +135°C. • Chemical resistance to highly acidic and alkaline media, e.g., pure ammonia. • Significantly higher abrasion and tear resistance than standard polyurethanes. • Exactly adjustable visco-elastic damping (rebound resilience). • Adhesion to steel higher than reported with any other polyurethane elastomer. • A novel polyurethane elastomer with more than 90% share of recycled material reaching mechanical properties in the same range as virgin material. This presentation will detail the materials and their properties and give application examples from pipeline cleaning, pipe protection, and pipe coating to mechanical protection devices made from recycled polyurethane elastomer.

scholarly journals Effect of Cross Section Reduction on the Mechanical Properties of Aluminium Tubes Drawn With Variable Wall Thickness

2011 ◽  
Vol 133 (6) ◽  
Author(s):  
Q. H. Bui ◽  
R. Bihamta ◽  
M. Guillot ◽  
A. Rahem ◽  
M. Fafard
Keyword(s):  
Mechanical Properties ◽  
Cross Section ◽  
Variable Thickness ◽  
High Performance ◽  
Cold Drawing ◽  
Tensile Tests ◽  
Outer Diameter ◽  
Tube Drawing ◽  
Microstructure And Mechanical Properties ◽  
Variable Wall

Variable thickness tube drawing is a new process for the production of high performance tubes. In this study, experiments were conducted to evaluate the effect of cross section reduction on the microstructure and mechanical properties of variable thickness aluminium tubes drawn using two different position controlled mandrel techniques. Various tubes with three different outer diameters were subjected to cold drawing at room temperature from 11% to 41% cross section reduction. The local mechanical properties were determined from tensile tests carried out on specimens cut from different positions in the tubes parallel to their axes. The distributions of the Vickers hardness over the surfaces at 0 deg and 90 deg to the drawing direction were examined. It was found that the microhardness, yield strength, and ultimate tensile of the deformed samples increase and the corresponding elongation decreases with the increase of cross section reduction. Also, the anisotropy in microstructure and mechanical properties is more significant with increasing of cross section reduction. The evolution of mechanical properties of drawn tubes versus cross section reduction depends on the mandrel shapes and initial tube outer diameter. This study helps to further understand the microstructure and mechanical properties evolutions during tube drawing process with variable thickness.

Sign in / Sign up

Export Citation Format

Share Document