scholarly journals Size Effects of High Strength Steel Wires

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 240 ◽  
Author(s):  
Kanji Ono
Keyword(s):  
Size Effects ◽  
High Strength ◽  
Pearlitic Steel ◽  
Coefficient Of Determination ◽  
Suspension Bridges ◽  
Long Span ◽  
Steel Wires ◽  
Existing Data ◽  
Design Construction ◽  
Theoretical Developments

This study examines the effects of size on the strength of materials, especially on high strength pearlitic steel wires. These wires play a central role in many long span suspension bridges and their design, construction, and maintenance are important for global public safety. In particular, two relationships have been considered to represent strength variation with respect to length parameters: (i) the strength versus inverse square-root and (ii) inverse length equations. In this study, existing data for the strength of high strength pearlitic steel wires is evaluated for the coefficient of determination (R2 values). It is concluded that the data fits into two equations equally well. Thus, the choice between two groups of theories that predict respective relationships must rely on the merit of theoretical developments and assumptions made.

scholarly journals Analysis of the Bauschinger Effect in Cold Drawn Pearlitic Steels

Metals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 114
Author(s):  
Jesús Toribio ◽  
Viktor Kharin ◽  
Francisco-Javier Ayaso ◽  
Miguel Lorenzo ◽  
Beatriz González ◽  
...  
Keyword(s):  
Mechanical Behaviour ◽  
Bauschinger Effect ◽  
High Strength ◽  
Pearlitic Steel ◽  
Internal Stresses ◽  
Compression Load ◽  
Prestressing Steel ◽  
Hardening Rule ◽  
Steel Wires ◽  
Cyclic Tension

Prestressing steel wires usually undergo cyclic loading in service. Therefore, it is of interest to analyse certain features of their mechanical behaviour under this type of loading, such as the Bauschinger effect (BE) or the hardening rule, that fit the real mechanical behaviour appropriately. In this study, different samples of high strength pearlitic steel wires were subjected to cyclic tension-compression load exceeding the material yield strength, thus generating plastic strains. From the experimental results, various parameters were obtained revealing that analysed steels exhibited the so-called Masing type BE. In addition, the variation of the BE characteristics (of the effective and internal stresses) with the applied plastic pre-strain indicated that the studied materials followed a mixed strain hardening rule with the domination of the kinematic component.

scholarly journals Fatigue cracking in high-strength cold-drawn pearlitic steel wires for anchorage in rocks

2016 ◽  
Vol 2 ◽  
pp. 2330-2337
Author(s):  
Jesús Toribio ◽  
Beatriz González ◽  
Juan-Carlos Matos
Keyword(s):  
Fatigue Cracking ◽  
High Strength ◽  
Pearlitic Steel ◽  
Steel Wires

A Study on the Development of Slip Form System With Lightweight GFRP Panel

2013 ◽  
Author(s):  
Hyejin Yoon ◽  
Won Jong Chin ◽  
Hee Seok Kim ◽  
Young Jin Kim
Keyword(s):  
High Performance ◽  
High Strength ◽  
Suspension Bridges ◽  
Long Span Bridges ◽  
Long Span ◽  
Management Technology ◽  
Early Strength ◽  
Near Future ◽  
Form System ◽  
Design And Construction

Nowadays, many countries are competing in the erection of long-span bridges with main span longer than 2,000 m owing to the tremendous innovations realized in the domain of high performance and high strength materials as well as in the design and construction technologies. The near future will see a boom in the market of suspension bridges with main span longer than 3,000 m. Since three-dimensionally shaped high concrete pylons would be unavoidably required to construct these super long-span bridges, need is to develop advanced slip form systems for their erection. This paper presents the development of a slip form system applying lightweight GFRP panel. Improved slip form management technology is secured by introducing a slip-up technique using GPS-based verticality control and wireless early strength estimation. A mock-up test is conducted by designing and fabricating the slip form system based on the developed techniques.

Multi-Scale Approach to the Fatigue Crack Propagation in High-Strength Pearlitic Steel Wires

2008 ◽  
Vol 5 (6) ◽  
pp. 101564 ◽  
Author(s):  
J. Toribio ◽  
B. González ◽  
J. C. Matos ◽  
F. J. Ayaso ◽  
Richard Neu ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
High Strength ◽  
Pearlitic Steel ◽  
Multi Scale ◽  
Steel Wires

scholarly journals Fracture behaviour of high-strength cold-drawn pearlitic steel wires: The role of non-metallic inclusions

2021 ◽  
Vol 33 ◽  
pp. 1203-1208
Author(s):  
Jesús Toribio ◽  
Francisco-Javier Ayaso ◽  
Beatriz González ◽  
Rocío Rodríguez
Keyword(s):  
Fracture Behaviour ◽  
High Strength ◽  
Pearlitic Steel ◽  
Steel Wires ◽  
Metallic Inclusions

Natural Vibration Characteristics of Long-Span Suspension Bridge with CFRP Cables

2010 ◽  
Vol 168-170 ◽  
pp. 1708-1711
Author(s):  
Hong Yu Zheng ◽  
Huai Yan Jiang ◽  
Zhi Tao Lu
Keyword(s):  
Natural Vibration ◽  
High Strength ◽  
Suspension Bridge ◽  
Vibration Characteristics ◽  
Maintenance Cost ◽  
Suspension Bridges ◽  
Long Span ◽  
Steel Cables ◽  
Wind Stability ◽  
Natural Vibration Characteristics

A non-corrosion, high strength, light weight material – carbon fiber reinforced polymer (CFRP) is introduced to replace steel as cable system in long-span suspension bridge for improving loading efficiency, reducing maintenance cost, enlarging the span of suspension bridge. The natural vibration characteristics of such new suspension bridge with CFRP cables are investigated by means of finite element in this paper. Two 2000m-span suspension bridges with steel cables and CFRP cables respectively are designed, analyzed, verified and compared. The analysis results provide a picture of the changes in natural vibration characteristics and the wind stability and earthquake-resistant behavior are briefly discussed if CFRP cables were applied.

Manufacturing of High-Strength and High-Ductility Pearlitic Steel Wires Using Noncircular Drawing Sequence

2014 ◽  
Vol 38 (7) ◽  
pp. 743-749
Author(s):  
Hyun Moo Baek ◽  
Sun Kwang Hwang ◽  
Ho Seon Joo ◽  
Yong-Taek Im ◽  
Il-Heon Son ◽  
...  
Keyword(s):  
High Strength ◽  
Pearlitic Steel ◽  
High Ductility ◽  
Steel Wires

Micro- and Macro-Approach to the Fatigue Crack Propagation in High-Strength Pearlitic Steel Wires

2007 ◽  
Vol 348-349 ◽  
pp. 681-684 ◽  
Author(s):  
Jesús Toribio ◽  
B. Gonzáles ◽  
Juan Carlos Matos ◽  
F.J. Ayaso
Keyword(s):  
Fatigue Cracks ◽  
Crack Opening ◽  
High Strength ◽  
Cold Drawing ◽  
Pearlitic Steel ◽  
Fatigue Behaviour ◽  
Eutectoid Steel ◽  
Opening Displacement ◽  
Steel Wires

This paper analyzes how the cold drawing process influences the fatigue behaviour of eutectoid steel, with special emphasis on the role of microstructural changes induced during such a manufacturing process. Fatigue cracks are transcollonial and exhibit a preference for fracturing pearlitic lamellae, with non-uniform crack opening displacement values, micro-discontinuities, branchings, bifurcations and frequent local deflections that create microstructural roughness. The net fatigue surface increases with cold drawing due to the higher angle of crack deflections.

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