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Journal articles on the topic 'Safety Factor Steel Pipes'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

WEI, ZHE. "GENERATION OF DECELERATION PULSES OF THE TROLLEY IN CHILD RESTRAINT SYSTEMS’ DYNAMIC TESTS BASED ON SIMULATIONS AND EXPERIMENTAL VALIDATIONS." Journal of Engineering Studies and Research 27, no. 2 (2021): 107–14. http://dx.doi.org/10.29081/jesr.v27i2.280.

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As one of devices for passive safety, child restraint system remains a positive factor in securing the safety of child occupants in vehicles’ collisions. Generation of deceleration pulses is essential for dynamic tests conducted to assess the safety performance according to many regulations such as UN Regulation No. 44. It deserves research on how to generate the qualified pulses conveniently and with low cost. A new method of convenience using steel pipes or tubes is recommended after all the factors influencing the deceleration being ascertained. Varied combinations of parameters make it pos

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Wang, Wanqi. "Influence of Thermal Behavior on the Safety Performance of the Pit Enclosure near Railway Foundations under Solar Radiation." Sustainability 14, no. 24 (2022): 17001. http://dx.doi.org/10.3390/su142417001.

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Thermal behavior often affects the performance of thin-walled steel structures and even becomes one of the controlling loads. Steel pipes are often used in foundation pit support. This problem of the thermal stress of steel pipes is very important. The Huhang Railway, a section of the high-speed railway from Huzhou to Hangzhou in Zhejiang Province, China, was examined in this study. In this paper, the displacement and stress in pit 358# of the Huhang Railway near the railway foundation was monitored, and a thermal coupling model was established. The temperature field distribution inside the fo

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3

Hadj Meliani, Mohammed, G. Pluvinage, and J. Capelle. "Gouge Assessment for Pipes and Associated Transferability Problem." Defect and Diffusion Forum 294 (December 2009): 15–25. http://dx.doi.org/10.4028/www.scientific.net/ddf.294.15.

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The purpose of this work is to assess a gouge defect in a pipe submitted to internal pressure. To do that a method is used which is based upon a failure assessment diagram and, more precisely, upon a Modified Notch Failure Assessment Diagram (NMFAD) which has been proposed as a mesofracture approach. The safety factor has been determined under conservative conditions; i.e for a X52 pipe steel having a relatively low fracture toughness and a severe gouge defect with high aspect ratio and high constraint. In addition, a mesofracture approach to the fracture toughness transferability problem has

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Korchagin, A. P., K. A. Kuznetsov, A. M. Kuznetsov, and S. I. Kirillov. "On the Methods for Assessing the Resistance of Steels to Brittle Fracture." Occupational Safety in Industry, no. 5 (May 2021): 59–64. http://dx.doi.org/10.24000/0409-2961-2021-5-59-64.

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The problem of assessing steels durability, their resistance to brittle fracture in the structures used in various branches of industry, remains relevant at the development of the new equipment and control of the old equipment. Standard strength calculations do not give a complete picture of the ability of steels due to their physical and mechanical properties to resist the formation and further development of defects and cracks under the action of actual stresses. The correct choice of a structural material for technical devices operating at low temperatures, knowledge of its characteristics

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Lu, Zhan, Jiayan Zheng, Pengbo Lan, Dingjia Chen, and Lijuan Yang. "Research on Local Buckling of Square-arched Corrugated Steel Pipe under Axial Compression." Advances in Engineering Technology Research 12, no. 1 (2025): 1393. https://doi.org/10.56028/aetr.12.1.1393.2024.

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Corrugated steel pipe is widely used in underground structures because of its advantages like higher structural strength, facilitate easier transportation and installation, boast extended service life, possess robust bending resistance, and demonstrate the capability to accommodate engineering issues like foundation deformation and uneven settlement. However, such structures are susceptible to buckling during service, but buckling on square-arched corrugated steel pipe is urgently lacking.This paper focuses on the buckling problem of square-arched corrugated steel pipe under uniform axial pres

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Koo, Sungmin, Haeyong Park, Myounghak Oh, and Seungjae Baek. "Automatic Verticality Monitoring and Securing System for Large Circular Steel Pipes." Electronics 12, no. 24 (2023): 4989. http://dx.doi.org/10.3390/electronics12244989.

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Securing the verticality of foundations is a crucial factor for ensuring safety in offshore construction. The repeated intrusion-pulling method is generally used to ensure verticality in suction bucket foundation construction processes. However, it relies heavily on the experience and skills of field workers and is relatively time-consuming. To address this problem, we propose an automatic verticality securing system for large circular steel pipes based on a verticality monitoring system. This system adjusts cables at locations where verticality correction is required without changing the exis

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Guy, Pluvinage, and Capelle Julien. "Risks Associated with the Use of Hydrogen as an Energy Carrier or Source." Journal of Energy and Power Technology 4, no. 3 (2022): 1. http://dx.doi.org/10.21926/jept.2203029.

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Hydrogen is a dangerous gas due to its low ignition energy, wide flammability range, promotion of the embrittlement of steel, and its high coefficient of permeation for polymers. The fracture toughness and failure elongation of pipe steels are strongly impacted by hydrogen embrittlement, whereas yield stress and ultimate strength are moderately impacted. Specific tools are required for the pipe defect assessment used for the transport of hydrogen, which is pure or blended with natural gas. The safety factors associated with cracks or scratches are obtained through the failure assessment diagra

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Golikov, N. I., M. M. Sidorov, I. I. Sannikov, and A. K. Rodionov. "Study of the mechanical properties of the gas pipeline metal after long-term operation in conditions of the North." Industrial laboratory. Diagnostics of materials 86, no. 6 (2020): 48–54. http://dx.doi.org/10.26896/1028-6861-2020-86-6-48-54.

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The residual strength and technical condition of the material of 530-mm steel pipe (14KhGS) of main gas pipeline are estimated to ensure the safety of long-term operation of pipelines in climatic conditions of the North. The mechanical properties are determined using standard methods of mechanical testing in laboratory conditions. A full-scale pressure test up to failure is used to determine the actual values of the fracture toughness and safety factor of the pipe. Full-scale tests were carried out on a test bench, a computer-measuring complex which displayed the reaction of the object to the

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9

Miura, N., and G. M. Wilkowski. "J-R Curves From Circumferentially Through-Wall-Cracked Pipe Tests Subjected to Combined Bending and Tension—Part II: Experimental and Analytical Validation." Journal of Pressure Vessel Technology 120, no. 4 (1998): 412–17. http://dx.doi.org/10.1115/1.2842352.

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In Part I (Miura and Wilkowski, 1998) of this paper, the theory of the two η-factor solutions for circumferentially through-wall-cracked pipes subjected to combined bending and tension due to internal pressure was presented. These solutions seemed to give reasonable predictions by comparing with the existing simplified J-estimation scheme. It was also ascertained that the J would be underestimated if the effect of the internal pressure was not properly considered. Consequently, this paper presents the application of these solutions to full-scale pipe tests. The tests were performed at 288°C (5

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Mayants, Yu A., D. I. Shiryapov, and E. S. Nosova. "A study of double and multiple loading of rod-type test samples made of pipe steel." Dependability 24, no. 4 (2024): 38–47. https://doi.org/10.21683/1729-2646-2024-24-4-38-47.

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During transmission pipelines pressure testing, the value of the test pressure is taken to be equal to 1.1 of the working pressure for sections of the normal category and 1.25 or 1.5 for sections of higher categories. The substantiations of the above values date back to the middle of the 20-th century, and may need to be reconsidered in the light of the new-generation pipe materials implementation. This paper aims to identify the optimal safety factor for pressure testing of main pipelines, taking into account the material of the pipes, as well as the variation of the destructive power in case

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Stanciu, Lavinia Silvia, and Ioan Popa. "Optimization Design of a 500 kN Workover Rig Mast after Computer Simulated Overload Test." Applied Mechanics and Materials 809-810 (November 2015): 932–37. http://dx.doi.org/10.4028/www.scientific.net/amm.809-810.932.

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The 500 kN mast, which is part of a workover rig used for interventions and overhauling works for oil and gas wells, is a spatial multiple indeterminate structure made of many bars, with rigid nodes. The aim of this paper is to determine, through computer simulation of overload test, the state of stress and displacements for the existing construction and to find an improved solution. The overload test is experimentally realized on specialized stands and involves the mast’s loading with the maximum hook load multiplied by a safety factor of 1.4 and, in addition, with the dead weight, the hoisti

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12

Miura, Naoki, Katsumasa Miyazaki, Masakazu Hisatsune, Kunio Hasegawa, and Koichi Kashima. "Ductile Fracture Behaviour of Class 2 and 3 LWR Piping and Its Implications for Flaw Evaluation Criteria." Solid State Phenomena 120 (February 2007): 85–94. http://dx.doi.org/10.4028/www.scientific.net/ssp.120.85.

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To achieve a rational maintenance program for aged Light Water Reactor components, it is important to establish and to improve the flaw evaluation criteria. The current flaw evaluation criteria such as ASME Boiler and Pressure Vessel Code Section XI are focused on Class 1 piping which usually shows relatively higher toughness. On the other hand, flaw evaluation criteria suitable for Class 2, 3 piping with moderate-toughness are also required because some Class 2, 3 piping systems are as important to plant safety analysis as Class 1 piping. In this study, both analytical and experimental studie

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13

Zhao, Heng Rui, and Guang Xu Cheng. "Surface Defect Inspection of Pressure Equipment Based on Indentation and Numerical Simulation." Key Engineering Materials 734 (April 2017): 285–92. http://dx.doi.org/10.4028/www.scientific.net/kem.734.285.

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Surface defects caused by damage or corrosion are major factor in petrochemical pressure vessels and line pipes failure. The characteristic size of typical surface defect is from micron to submillimeter which belongs to mesoscopic scale, leading to difficulties for inspection and evaluation. The instrumented indentation method has widely used in the characterization of micro-zone mechanical behavior which could be effective in surface defects analysis. This paper aims at investigating the correspondence between indentation experimental results and distribution characteristics of surface defect

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14

Wirasana, I. Made, I. Nengah Sinarta, and Ni Komang Armaeni. "Landslide Threat Analysis and Slope Reinforcement Method with Sheet Pile on Singaraja City Boundary Road – Mengwitani Km 37+900 Right." Civil and Environmental Science 005, no. 02 (2022): 194–201. http://dx.doi.org/10.21776/ub.civense.2022.00502.8.

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The trigger factor for landslides is due to high rainfall intensity and long duration and the drainage system on the slopes is not good, causing the soil to become saturated. The Singaraja–Mengwitani City road section every rainy season always occurs landslides due to the geometry of the road adjacent to the slope because it is in a hilly area, as well as a drainage system that does not function during the rainy season. Based on the results of the previous soil investigation, the road section is a type of silty clay due to weathering of the ancient Buyan-Beratan volcanic rocks. The research wa

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15

Kumar Sammangi, Dileep, Lokesh Yadav Kayathi, Jayadeep Kanaparthi, Raja Abhishek Varma Kutcherlapati, and Rambabu Sarimalla. "A study on structural behaviour and vibrational characteristics of a go-kart chassis." E3S Web of Conferences 391 (2023): 01042. http://dx.doi.org/10.1051/e3sconf/202339101042.

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A go-kart is a four-wheel drive that lacks a suspension system and differential unit due to the very low ground clearance usually employed for Formula E or Formula 1 racing. Due to the absence of a suspension system, the chassis of the go-kart should be rigid and strong enough to withstand the impact loads, as well as other support equipment. The present research focused on the design, material selection, and structural and vibrational analysis on the go-kart chassis. For this, the chassis is designed with suitable dimensions and materials. In this, the chassis is modelled by using CATIA V5 so

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16

Budiono, Budiono, Singgih Irianto, Budi Arief, and Lirawati Lirawati. "Analysis of the Space Frame Structure of the Cileungsi Fly Over Tower Bogor Regency." Eduvest - Journal of Universal Studies 4, no. 11 (2024): 9853–68. http://dx.doi.org/10.59188/eduvest.v4i11.44776.

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This research is part of the plan of the Bogor Regency government, especially Cileungsi District, in arranging the Cileungsi flyover which is currently filled with garbage and used as a shadow terminal, making the area look slum. The arrangement effort is made to create a comfortable, neat flyover that can become an icon of Bogor Regency. The research aims to produce a portal tower flyover design that is aesthetic, unique, sturdy, and meets the strength and stability standards of the structure according to local conditions. The analysis was carried out using SAP2000 software to model the three

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17

Bendaoui, Messaoud, Allaoua Kherraf, and Soumia Benbouta. "Simulation of damage under cyclic loading for API 5L X70 steel pipelines (fatigue test)." STUDIES IN ENGINEERING AND EXACT SCIENCES 5, no. 1 (2024): 876–87. http://dx.doi.org/10.54021/seesv5n1-046.

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The most efficient way to move large volumes of gas and oil is through pipelines, either from points of production to storage locations or from storage locations to distributed points of end use. One of the main materials of gas transportation pipes is X70 material. Base on the importance of in-service API 5L X70 pipelines, it is important for the safe operation of this system to know the lifespan of pipelines, and predict fatigue crack growth (FCG) of API 5L X70 steel pipeline. The objective of this theme is to study the lifespan of pipelines used for the transport of natural gas, oil and wat

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18

Chen, Jian, Zheng Qiang Lei, Fu Xiang Wang, Ting Wang, and Ming Fei Li. "Fitness for Purpose Assessment of Girth Weld Defect Based on In-Line Inspection." Applied Mechanics and Materials 853 (September 2016): 524–28. http://dx.doi.org/10.4028/www.scientific.net/amm.853.524.

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The girth weld defect is one of the most common types of defects on oil and gas pipelines, which can have a strong impact on the operation safety. Several girth weld failure accidents have occurred on PetroChina’s pipelines in recent years. In this paper, PetroChina’s current work on inspection and fitness for purpose assessment of girth weld defects is summarized. The in-line inspection has been proved to be the best practice for oil and gas pipeline defect inspection, but there are still some technical issues such as defect characterization and parameter selection. Fitness for purpose assess

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Di Laora, Raffaele, George Mylonakis, and Alessandro Mandolini. "Size Limitations for Piles in Seismic Regions." Earthquake Spectra 33, no. 2 (2017): 729–56. http://dx.doi.org/10.1193/032116eqs045m.

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A novel theoretical study exploring the importance of pile diameter in resisting seismic actions of both the kinematic and the inertial type is reported. With reference to a pile under a restraining cap, it is shown analytically that for any given set of design parameters, a range of admissible pile diameters exists, bounded by a minimum and a maximum value above and below which the pile will yield at the top even with highest material quality and amount of reinforcement. The critical diameters depend mainly on seismicity, soil stiffness and safety factor against gravity loading, and to a less

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20

Tang, Mengxiong, Zao Ling, and Yuliang Qi. "Bending Strength of Connection Joints of Prestressed Reinforced Concrete Pipe Piles." Buildings 13, no. 1 (2023): 119. http://dx.doi.org/10.3390/buildings13010119.

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The connection joint of prestressed concrete pipe piles is a typical steel–concrete structure, and its bending strength has evolved into a critical factor affecting the safety of supporting structures in underground engineering. Based on full-scale bending tests of five specimens of large-diameter prestressed reinforced concrete (PRC) pipe piles and connection joints, as well as the corresponding finite element numerical simulation, the bending bearing and deformation characteristics of connection joints of PRC pipe piles were analyzed, together with the effects of concrete strength, precompre

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Melvin Kho, Ying Fan, Daryn Ng Tee Ngi, Dong Hao Sim, et al. "The Effect of Sheet Pile Used for Temporary Work Structure for Excavation Purposes." Semarak International Journal of Civil and Structural Engineering 4, no. 1 (2025): 1–21. https://doi.org/10.37934/sijcse.4.1.121a.

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It is often challenging to construct temporary work structures for excavation work with temporary structures at coastal areas with soft soil properties and high-water tables. In this project, we simulated the behaviour of soil movements and stresses by finite element analysis method (using PLAXIS 2D) under different types of U- type steel sheet piles. The outcome result is then presented in the form of a table in this paper, for comparison and reference, which promotes better workmanship and quality in selecting the suitable sheet pile used for temporary work structures for excavation purposes

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Melvin Kho, Ying Fan, Daryn Ng Tee Ngi, Dong Hao Sim, et al. "The Effect of Sheet Pile Used for Temporary Work Structure for Excavation Purposes." Semarak International Journal of Civil and Structural Engineering 4, no. 1 (2025): 1–21. https://doi.org/10.37934/sijcse.4.1.121.

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It is often challenging to construct temporary work structures for excavation work with temporary structures at coastal areas with soft soil properties and high-water tables. In this project, we simulated the behaviour of soil movements and stresses by finite element analysis method (using PLAXIS 2D) under different types of U- type steel sheet piles. The outcome result is then presented in the form of a table in this paper, for comparison and reference, which promotes better workmanship and quality in selecting the suitable sheet pile used for temporary work structures for excavation purposes

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Ghazanfar, Alfanditya, Moh Muntaha, and Machsus Machsus. "Alternative Design of Abutment Damage Management for Glendeng Bridge Tuban Regency." INTERNATIONAL JOURNAL ON ADVANCED TECHNOLOGY ENGINEERING AND INFORMATION SYSTEM (IJATEIS) 4, no. 1 (2025): 111–23. https://doi.org/10.55047/ijateis.v4i1.1592.

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This study aims to reconstruct the damage to the bridge abutment that occurred in 2020. The bridge abutment was modeled based on its actual conditions, followed by simulations under various scenarios. The research methods included collecting secondary and primary data, as well as computational modeling. Secondary data collected consisted of bridge design drawings, soil data, and river water level data for specific time periods. The next step was to model the bridge structure using Plaxis software. The analysis results indicate that the collapse of the bridge abutment in 2020 was likely caused

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Scavuzzo, Rudolph J. "Effect of Loading on Stress Intensification Factors." Journal of Pressure Vessel Technology 128, no. 1 (2005): 33–38. http://dx.doi.org/10.1115/1.2148420.

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The basic objective of this investigation is to determine the effect of loading on the stress intensification factors of Markl’s fatigue evaluation method for metal piping. Markl’s method is based on the fatigue testing of 4 in. schedule 40 carbon steel cantilever piping. Subsequent testing using a four-point loading showed that the S-N data were different from that predicted by the procedure and equation developed by Markl. Markl’s method is based on determining the elastic-plastic forces in a piping system by multiplying the elastic system stiffness by the actual deflection. In this manner a

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Dong, Zhongji, Faning Dang, and Jun Gao. "Experimental Study on the Flexural Behavior of Connected Precast Concrete Square Piles." Advances in Civil Engineering 2023 (April 19, 2023): 1–12. http://dx.doi.org/10.1155/2023/5731841.

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Part of deep foundation pit support engineering needs to select connected precast concrete square piles (CPCSPs). Under the premise that the quality of precast concrete square piles (PCSPs) meets engineering requirements, the quality of CPCSPs becomes the key factor to ensure the safety of foundation pit support structures. This paper puts forward a new connection technology of CPCSPs and carries out the flexural behavior experiment of unconnected precast concrete square piles (UPCSPs) and CPCSPs. The distribution of crack and strain on different surfaces of UPCSPs and CPCSPs are measured by c

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Chen, Lichao, Chengchao Guo, and Dingfeng Cao. "Numerical Investigation of Earth Berm Effects on Prefabricated Recyclable Supporting Structure in Circular Excavations." Applied Sciences 14, no. 11 (2024): 4703. http://dx.doi.org/10.3390/app14114703.

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The prefabricated recyclable supporting structure (PRSS) is an innovative support system that integrates a steel skeleton with polymer waterproof technology. Earth berms are extensively adopted to support the PRSS, but there is limited understanding on the factors influencing their behavior in circular excavations. In this paper, a numerical model is first validated with a case history in Henan, China. Afterwards, the geometric parameters of the earth berms, including the height (H), the top width (B1), and the bottom width (B2), on the behavior of the PRSS, are investigated. It is shown that,

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Vahedian, Mostafa, Masoud Cheraghi Seifabd, and Alireza Baghbanan. "Identifying the Effective Parameters in Soil Arching for Retaining Structure; A case study of Line 2 of Mashhad Subway." Journal of Civil Engineering and Urbanism 10, no. 5 (2020): 42–52. http://dx.doi.org/10.54203/jceu.2020.7.

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The effective parameters on soil arching in retaining structures composed of the steel piles (2PIE300) and the steel anchors were considered using PLAXIS 3D TUNNEL for a three-dimensional numerical model. To better compare, it was assumed that external loading conditions and technical features of structural elements were the same. To determine the limits of effective parameters in fine (CL-ML) and coarse grains (SC-SM), according to the soil specifications of the stations A2 to L2 in in Mashhad urban railway line 2 (Iran), Hardening Soil Model (HS) was used. Modeling started with a horizontal

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Arama, Zülal Akbay, Aylin Ece Kayabekir, Gebrail Bekdaş, and Zong Woo Geem. "CO2 and Cost Optimization of Reinforced Concrete Cantilever Soldier Piles: A Parametric Study with Harmony Search Algorithm." Sustainability 12, no. 15 (2020): 5906. http://dx.doi.org/10.3390/su12155906.

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This paper presents the parametric modelling process of cantilever soldier pile walls based on CO2 and cost optimization with the Harmony Search Algorithm. The study attempted to fulfil the geotechnical and structural design requirements and sustainable usage necessities simultaneously. The variants of the optimum design process are selected as the cross-sectional characteristics of cantilever soldier piles such as the length and diameter of the pile, and the other design variables are the reinforcement detailing of the pile such as the diameter and the number of reinforcement bars. Besides th

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Mahardhika, Bogie Prastowo, Suharyanto, and Hari Nugroho. "Soil Improvement using Cement Deep Mixing (Case study: Dredging of the Channel and Port Basin of Benoa)." Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil 13, no. 1 (2025): 1–10. https://doi.org/10.33558/bentang.v13i1.10132.

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The problem we often encounter in the field of geotechnics, especially in Indonesia, is soft soil. The characteristic of soft soil is low bearing capacity. During the dredging process of the harbor basin, the soft soil in the harbor may experience movement. Therefore, a system is needed to retain the soil on the land side of the port in the form of sheet piles. However, the safety factor does not meet the requirements. Therefore, soil improvement is necessary to maintain soil stability by increasing the soil's shear strength, one of the methods that can be used is Cement Deep Mixing (CDM). Thi

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Bae, Sang Geun, Jewoo Choi, Deok Shin Kang, Taehoon Hong, Dong-Eun Lee, and Hyo Seon Park. "SHM-BASED PRACTICAL SAFETY EVALUATION AND VIBRATION CONTROL MODEL FOR STEEL PIPES." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 29, no. 8 (2023): 729–40. http://dx.doi.org/10.3846/jcem.2023.20146.

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Unexpected damages or failures of steel pipes in refineries cause significant disruption to economic activity. While research has been conducted on the prevention of damage to steel pipes, no systematic methods or practical techniques for monitoring of vibrations to estimate the state of pipeline system have been reported. In this study, vibration safety evaluation model consisting of design – evaluation – control steps was developed to measure and control the vibration level during operation of the piping system of an oil refinery. The measurement location was designed by examining the struct

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Kholiq, Muhammad Nur, Iswan Iswan, Aminudin Syah, and Ahmad Zakaria. "Evaluasi Stabilitas Lereng Pada Ruas Jalan C.10 Perumahan Citraland Bandar Lampung Menggunakan Program Komputasi dan Penanggulangannya." Jurnal Rekayasa Sipil dan Desain 9, no. 4 (2021): 729–38. https://doi.org/10.23960/jrsdd.v9i4.2122.

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Citraland is a located in a hilly area, has steep contours and different elevations. So the area has the potential for landslides. This study is to analyze the value of the slope safety factor and calculate the slope stability using a concrete sheet pile with a computational program. The methods used are the Fellenius, Bishop, Janbu, and Morgenstern-price methods. From the results of the computational program analysis, the values of the existing slope safety factors using the Fellenius, Bishop, Janbu, and Morgenstern-price methods were 0.965, 1.052, 0.925, 1.027 for static conditions and for d

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Lv, Jianbing, Jianjun Lu, and Hao Wu. "Study on the Mechanical Characteristics and Ground Surface Settlement Influence of the Rise–Span Ratio of the Pile–Beam–Arch Method." Applied Sciences 13, no. 9 (2023): 5678. http://dx.doi.org/10.3390/app13095678.

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The pile–beam–arch method (PBA) method is increasingly being used in the construction of metro stations with complex traffic conditions. The rise–span ratio of the arch not only affects the height of the station, but also affects the rationality of the design of subway stations and the safety of construction. The mechanical response of steel pipe piles with different rise–span ratios and the effect of controlled surface settlement have been investigated in the interactions involved in pile–soil system. In this paper, the finite element model of each rise–span ratio was established, and the rat

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Sun, Yunfei, Xiaomeng Tan, Jun Liu, and Feng Yun. "Analysis of Intergranular Corrosion Cracking of Austenitic Stainless Steel Tubes for Utility Boilers." Journal of Physics: Conference Series 2488, no. 1 (2023): 012013. http://dx.doi.org/10.1088/1742-6596/2488/1/012013.

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Abstract The cracking failure accidents of austenitic stainless steel pipes of utility boilers often occur. The intergranular corrosion cracking caused by improper control of welding, heat treatment and cold working processes is an important reason for its failure. Through the analysis of typical cases, this paper expounds on the influence of welding, heat treatment and cold working processes on the service safety of austenitic stainless steel pipes and puts forward protective measures.

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Li, Fa Gen, Xun Ji Li, An Qing Fu, Ze Liang Chang, Xian Ming Li, and Quan Feng. "Technical and Economic Analysis on Bimetallic Clad Pipes for Sour Service." Materials Science Forum 944 (January 2019): 950–55. http://dx.doi.org/10.4028/www.scientific.net/msf.944.950.

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With the development of sour gas fields in China, the problem of corrosion protection about gathering and transporting pipes used in CO2/H2S-containing condition gradually appeared, and the demand for economic and technical anticorrosion measures became more and more urgent. As we known, non-metallic material could not give consideration to performance and price, carbon steel with corrosion inhibitor was sometimes still seriously corroded and corrosion resistant alloy pipes was too expensive to use independently. Moreover, for bimetallic lined pipes it had hard to get rid of some inherent safe

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Liu, Zilong, Jianke Ai, Shuming Jia, and Jimin Zhong. "Review of research on the effects of vibration sources with different strain rates on buried pipelines." E3S Web of Conferences 618 (2025): 02014. https://doi.org/10.1051/e3sconf/202561802014.

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Pipeline transportation is of great significance in modern society but faces many potential safety hazards, with vibration being a significant external cause of pipeline leakage accidents. This article reviews the impact of different strain rate vibration sources (blasting vibration and mechanical vibration) on buried pipelines and the current research status of the dynamic responses of PE pipes and steel pipes. Blasting vibration has a short duration and high strain rate, which can directly damage the pipeline or indirectly cause its settlement and deformation; mechanical vibration has a wide

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Wu, Tao, and Zeng Zhang Wang. "Research of Effect on Water Quality of Combined Stainless Steel Plastic Pipe and PPR Pipe." Advanced Materials Research 864-867 (December 2013): 2108–11. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.2108.

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Taking combined stainless steel plastic pipe and PPR pipe which was widely used in the secondary water supply system as research objects, we do a research of effect on water quality of these pipelines. These test indexes were divided into basic indexes and additional indexes. In addition, heterotrophic bacteria plate count was used to observe the attached bacteria on the inner wall of these two different pipes. The results showed that these two kinds of pipes are qualified for their hygienic safety as drinking water distribution equipments. The effects of pipe wall on water quality increased w

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Septe.S, Edi. "Internal Corrosion Rate Of Api 5l X-42 Steel In Crude Oil Production Installation Pipe." Journal of Renewable Engineering 1, no. 4 (2024): 1–6. http://dx.doi.org/10.62872/fzbzzg35.

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Steel pipes remain the preferred choice for distribution and crude oil installation pipes in the oil and gas industry due to their strength, surface hardness, and cost-effectiveness. However, their susceptibility to corrosion in harsh environments poses significant challenges. This research focuses on analyzing the corrosion rate of API 5L X-42 steel in a crude oil environment at a temperature of 40°C. The corrosion rate was determined using the weight loss method, revealing that the rate varies over time. The findings of this study provide crucial insights for the industry, particularly in pr

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Yang, Meng, Xu Fu, Huanqin Liu, Lintai Wang, and Qian Li. "Influencing Factors, Design Methods, and Buoyancy Reduction Measures for Basement Anti-Flotation Engineering." Buildings 14, no. 9 (2024): 3005. http://dx.doi.org/10.3390/buildings14093005.

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Basement anti-flotation design is crucial in modern urban construction. An increase in groundwater buoyancy can cause basement structures to uplift, leading to structural instability or even damage. To ensure the stability and safety of underground structures under various hydrogeological conditions, anti-flotation design must comprehensively consider factors such as construction, design, supervision, structure, and hydrology. During construction, improper dewatering measures or unreasonable construction progress may lead to an abnormal rise in groundwater levels, increasing the risk of anti-f

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Gresnigt, Arnold M., Spyros A. Karamanos, and Kyros P. Andreadakis. "Lateral Loading of Internally Pressurized Steel Pipes." Journal of Pressure Vessel Technology 129, no. 4 (2006): 630–38. http://dx.doi.org/10.1115/1.2767345.

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This paper examines the denting response of pipes subjected to lateral (transverse) quasistatic wedge loading, in the presence of internal pressure. Pipes are modeled with nonlinear shell finite elements and a simplified analytical model. The analysis focuses on the significant influence of internal pressure on the denting resistance. Furthermore, the effects of wedge denting device orientation on the denting resistance are briefly discussed. Motivated by the experimental and numerical results, a two-dimensional heuristic model is proposed, which yields closed-form expressions for the denting

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Qiao, Gui-ying, Xiao-wei Chen, Zhi-en Zhang, et al. "Mechanical Properties of High-Nb X80 Steel Weld Pipes for the Second West-to-East Gas Transmission Pipeline Project." Advances in Materials Science and Engineering 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/7409873.

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The mechanical properties of steel pipe have great effects on the integrality and operation safety of gas transmission pipeline. In order to reduce the cost of the steel pipe, the high-Nb X80 pipeline steels with the different alloying systems have been used in the Second West-to-East Gas Transmission Pipeline Project. Nevertheless, an investigation into the effects of chemical composition on the mechanical properties of steel pipes is lacking. In this work, the chemical composition and mechanical properties of high-Nb X80 grade steel pipes with a diameter of ϕ1,219 mm and a wall thickness of

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Fan, Jinchang, Canjun Yang, Yanhu Chen, et al. "An underwater robot with self-adaption mechanism for cleaning steel pipes with variable diameters." Industrial Robot: An International Journal 45, no. 2 (2018): 193–205. http://dx.doi.org/10.1108/ir-09-2017-0168.

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Purpose This paper aims to present an underwater climbing robot for wiping off marine life from steel pipes (e.g. jackets of oil platforms). The self-adaption mechanism that consists of a passive roll joint and combined magnet adhesion units provides the robot with better mobility and stability. Design/methodology/approach Adhesion requirements are achieved by analyses of falling and slipping. The movement status on pipes is analyzed to design the passive roll joint. The optimized structure parameters of the combined magnet adhesion unit are achieved by simulations. An approximation method is

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Jiang, Rui, Diyong Tang, Yuwei Zhao, et al. "Immersion Corrosion of Mild Steel and Low Alloy Steel in Eutrophic Freshwater Lakes." Materials Performance 53, no. 9 (2014): 58–62. https://doi.org/10.5006/mp2014_53_9-58.

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The eutrophication of freshwater lakes raises questions about the safety and serviceability of hydroinfrastructure and water pipes. In this study, immersion corrosion of A3 mild steel and X70 steel was tested in clean and eutrophic freshwater lakes. Results showed that the metals exhibited a lower corrosion rate in eutrophic water than in clean water in the early stage. In the later stage of anaerobic corrosion, the metals showed an accelerated corrosion process. Moreover, in the eutrophic water, increased nutrients and sulfate further enhanced the activity of sulfate-reducing bacteria.

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Gerasimova, Alla Alexandrovna. "INVESTIGATION OF REGULARITIES OF PLASTIC DEFORMATION OF HOLLOW STEEL PROFILES BY COMPRESSION." Computational nanotechnology 6, no. 3 (2019): 22–26. http://dx.doi.org/10.33693/2313-223x-2019-6-3-22-26.

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The article studies the kinematics of elastic-plastic deformation of hollow steel profiles. The aim of the work was to improve the power characteristics of the processes of plastic deformation of energy-absorbing structural elements of the hollow profile of vehicles and to increase the passive safety and reliability of equipment. Finite element modeling of kinematics of processes with control of parameters of energy absorption of steel pipes of various cross sections was carried out. The results of virtual studies of bending and precipitation at the end of a number of hollow profiles in the fo

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Mohd Hashim, Mohd Hisbany, Mohd Fakri Muda, Nurhakim Hazman Norhan, et al. "Structural Rehabilitation of API Steel Pipes Using GFRP Under Dynamic Condition." Jurnal Kejuruteraan 36, no. 5 (2024): 2203–12. http://dx.doi.org/10.17576/jkukm-2024-36(5)-37.

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Corrosion of steel pipes significantly challenges industries such as oil and gas, water transport, and chemicals, where pipeline integrity is paramount. Degradation due to corrosion leads to reduced efficiency, heightened risk of catastrophic failure, and substantial economic and safety concerns. This study investigates the effectiveness of Glass Fiber-Reinforced Polymer (GFRP) wrap in restoring and enhancing the performance of corroded API 5L X42 steel pipes. Through controlled corrosion induction, application of GFRP wrapping, and cyclic loading tests, this study offers a comprehensive under

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Ng, C. WW, L. M. Zhang, and K. KS Ho. "Influence of laterally loaded sleeved piles and pile groups on slope stability." Canadian Geotechnical Journal 38, no. 3 (2001): 553–66. http://dx.doi.org/10.1139/t00-109.

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Many high-rise buildings, bridges, and transmission towers are constructed on steep slopes in Hong Kong and are supported by large-diameter piles. These structures may be subjected to large lateral loads, such as those caused by typhoons, earthquakes, and high-speed vehicles. The margin of safety of the slope may decrease as a result of stresses transferred from the piles to the slope. To minimize the transfer of lateral load from the buildings to the shallow depths of the slope, an annulus of compressible material (sleeving) is sometimes formed between the piles and the adjacent soils. In thi

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Jones, N., and R. S. Birch. "Influence of Internal Pressure on the Impact Behavior of Steel Pipelines." Journal of Pressure Vessel Technology 118, no. 4 (1996): 464–71. http://dx.doi.org/10.1115/1.2842215.

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This article presents some experimental data recorded from 54 impact tests on pressurized mild steel pipes. The pipes were fully clamped across a span which was ten times the outside pipe diameter of 60 mm. The pipes had a wall thickness of 1.70 mm and were impacted laterally by a rigid wedge indenter at the mid-span and one-quarter-span positions. The impact velocities ranged up to 13.6 m/s and caused large inelastic indentations for the lower values and at higher values a loss of integrity which could occur underneath the indenter and/or at an end support. The critical values for the two fai

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Shchipakov, N. A., N. V. Krysko, and A. G. Kusyy. "Inspection of Hidden Areas of Small-diameter Steel Pipes using Ultrasonic Flaw Detection." Occupational Safety in Industry, no. 12 (December 2023): 7–13. http://dx.doi.org/10.24000/0409-2961-2023-12-7-13.

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According to the current regulatory documents, as the established service life of gas pipelines for various purposes expires, they must be inspected in order to assess the current technical condition, make a decision on the residual life and the possibility of further operation at hazardous production facilities, as well as other buildings and structures. The possibility is considered related to using ultrasonic testing for detecting damage of corrosion origin in the sections of such pipelines hidden from the direct observation in interfloor ceilings and passages through the walls of buildings

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Kondratenko, L. A., and L. I. Mironova. "Residual Stresses under Radial Deformation of Steel Pipes." Journal of Machinery Manufacture and Reliability 51, no. 7 (2022): 630–36. http://dx.doi.org/10.3103/s1052618822070093.

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Mambetov, R. F., V. A. Svintsov, and V. M. Kushnarenko. "Field Tests of Steel Pipes at the Hydrogen Sulfide-Containing Deposit." Occupational Safety in Industry, no. 7 (July 2019): 49–55. http://dx.doi.org/10.24000/0409-2961-2019-7-49-55.

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Primin, O. "The efficiency of using ductile iron water pipes in soft soil." E3S Web of Conferences 419 (2023): 01012. http://dx.doi.org/10.1051/e3sconf/202341901012.

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At the present stage of reforming the housing and public services, toughening the requirements for the life and reliability of pipelines of the municipal life support systems, the issues of developing the requirements for choosing the material and type of pipes in relation to specific operating conditions of urban water supply systems become very relevant. The reliability and safety of the public water supply have been the main requirements applicable to these systems as the most important components of public health and one of the main priorities of the state social policy [1,2]. Of great imp

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