The Top-down crack (TDC) has become the major cracking mechanism in thick pavement structure, especially for the perpetual pavement. The heavy-vehicle load condition plays a key role in the ...
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Skid Steer Attachment Designed for Longitudinal Joint Repair. Remove and replace at deeper depths on the joint line or other targeted areas; Requires less material; Cuts a V-shape into …
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Longitudinal crack defects are a frequent occurrence on the surface of thin slabs during the high-speed continuous casting process. Therefore, this study undertakes a detailed analysis of the solidification characteristics of hyper-peritectic steel thin slabs. By establishing a three-dimensional heat transfer numerical model of the thin slab, the formation mechanism of …
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In this report, the formation mechanism of a longitudinal crack and the molten metal behavior in electron beam welding have been investigated. The results obtained are as follows. (1) Longitudinal crack sensitive regions could be classified into two types according to the formation mechanism.
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majority of the cracks encountered occur at the longitudinal joints" (Nicholls 2008). Once a crack forms, water can enter the crack and cause further damage. "The method used to repair longitudinal cracks is to first clean out the area of loose dirt, debris, and mud, and then add rubberized asphalt to the crack and patching the crack with a
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Longitudinal crack is a typical surface defect for slab of steel. Accurate prediction of longitudinal crack is of great significance to improve slab quality. However, in actual production, the quan...
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Finally, this model was trained and tested using longitudinal crack and non-longitudinal crack samples and compared with the decision tree, the gradient boosting decision tree (GBDT) and XGBOOST ...
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direction above the crack at the lift-off of 2 mm. The magnetic field in X direction (Bx) and Z direction (Bz) are extracted on the defined path. As shown in Fig. 3, Bx shows a trough in the center of the longitudinal crack while Bz shows a negative and positive peak at the end of the longitudinal crack. . Fig. 3.
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order to avoid longitudinal cracks. KEYWORDS Funnel Mould, Longitudinal Face Crack, Thin-Slab Casting, Continuous Casting, Numerical Model INTRODUCTION Longitudinal face cracks are one of many problems that can arise in thin-slab continuous casting. They can be caused by a variety of sources, including non-uniform heat transfer, mould level
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Cracks parallel to the pavement's centerline or laydown direction. Can be a type of fatigue cracking or top-down cracking.
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As shown in Fig. 2, the typical medium carbon alloyed bloom longitudinal cracks under primary mold flux during a continuous casting are firstly analyzed and then, the physical and chemical properties of the mold flux by viscometer, single hot thermocouple technology (SHTT), and the double hot thermocouple technology (DHTT).Moreover, proposing …
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Heavy Crack Crusher; Attribute Effect MP Usage Cooldown Attribute Effect Cooldown; MP Usage decreased to 60% Cooldown increased to 150%: 60 MP: 12 Seconds: Damage increased to 144% Cooldown increased to 120%: 9.6 Seconds: Total Damage {{Average damage is tested on small (e.g., Lowe) to medium targets (e.g., Wooden Doll) with realistic positioning.
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The frequency content of the Rayleigh wave signals obtained using the EMAT pitch-catch system on various locations of a rail containing gauge corner cracking is shown in figure 12. 3.2.2 Longitudinal crack detection Figures 13 and 14 show respectively the signal amplitudes and magnitude FFTs obtained over a relatively defect free region of the ...
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Four types of cracks were classified based on the morphological features: longitudinal crack, transverse crack, alligator crack, and pothole, as shown in Figure 3. To be noted, the D00, D10, D20 ...
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횡균열(Longitudinal Crack)은 일반적으로 연성이 나쁜 용착금속괴 모재에서 발생하는데 용접의 종방향수...
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The paper is devoted to the numerical study of some fundamental aspects of longitudinal shear crack propagation in sub-Rayleigh and supershear regimes. The simulation was carried out with use of particle-based movable cellular automaton method. It is shown that a well-known phenomenon of shear crack acceleration towards longitudinal wave speed ...
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Longitudinal cracking in pavement is a form of cracking that runs parallel to the centre line of the roadway. It typically occurs when traffic or environmental conditions cause …
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A crack that runs lengthwise or axially to the tube axis, is known as a longitudinal tube crack. Figure 1 illustrates this. Figure 1. Longitudinal tube crack . In the first article of our troubleshooting leaks series, we outlined the following probable causes for a leakage coming from a longitudinal tube crack as the following: Poor quality ...
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Longitudinal tube cracks are fissures that run parallel to the length of a tube, often resulting from stress, fatigue, or manufacturing defects. These cracks can lead to catastrophic failures if not identified and addressed promptly.
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Specifically, the depth of longitudinal depressions increases crack width, while transverse depressions can inhibit it to some extent. Macrostructure analysis of the cross-section revealed a continuous segregation line at the bottom of the depression, closely related to heat transfer, thermal stress, and the flow of solute-enriched liquid steel.
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Longitudinal cracking is a type of asphalt distress in which long, parallel cracks appear on the pavement's surface. These cracks usually run …
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Chamfered mould has gradually become a new technology equipment to eliminate transverse corner crack. However, longitudinal corner crack ratio of chamfered slab was very high. Solidification microstructure was detected in the area where the longitudinal corner crack occurred. Effect of narrow face shape and taper distribution of mould copper plate on …
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The causes of longitudinal crack development in the upper stem of TCB are uncertain, but may include the tight clamping of lifting devices. There are two primary concerns with significant longitudinal cracking. If long pieces of concrete are separated from the underlying section, they may be prone to breaking loose and becoming flying debris ...
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A longitudinal crack is a type of welding defect that occurs when the weld metal cools and contracts. What causes longitudinal cracking welding? This can happen if the weld metal is not properly supported or if it is not properly cooled. Longitudinal cracks can also occur if the weld bead is too small.
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