Measurement of elastic modulus of laser cladding coatings by laser ultrasonic method

Zou, Yun; Chai, Yanwei; Wang, Dong; Li, Yang

doi:10.1016/j.optlastec.2021.107567

Cited by 15 publications

(7 citation statements)

References 33 publications

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“…(2) Research conditions and grid division: The casing material is the universal material of Project Q125; the slip fracture strain is the maximum strain before the material fracture; the fracture strain is set to 0.147; the triaxial stress is 0; the strain ratio is 0; slip teeth are G0412 hard alloy; 21 and the cone and stop ring are rigid bodies. The six degrees of freedom of the stop ring and casing are fixed.…”

Section: Resultsmentioning

confidence: 99%

“…Cai et al also studied the influence of the parameter design of slip on the stress and slip of casing. Cai et al, Ma et al, Hao et al, and Liu et al − analyzed the distribution law of bite mark depth and equivalent stress distribution of the tooth root of slip tooth.…”

Section: Resultsmentioning

confidence: 99%

“…After overcoming the antisetting force (antisetting shear nail), the slip tooth block slowly and evenly expands from the front end of the stress groove and goes up along the cone and continues to expand and be fixed on the inner wall of the wellbore casing through the teeth. The sealing element seat continues to press the sealing element casing downward and locks with the locking ring inside the cone to prevent it from retreating; thus, the frac plug is firmly fixed, as shown in (2) Research conditions and grid division: The casing material is the universal material of Project Q125; the slip fracture strain is the maximum strain before the material fracture; the fracture strain is set to 0.147; the triaxial stress is 0; the strain ratio is 0; slip teeth are G0412 hard alloy; 21 and the cone and stop ring are rigid bodies. The six degrees of freedom of the stop ring and casing are fixed.…”

Section: Experimental and Computationalmentioning

confidence: 99%

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Study and Field Trials on Dissolvable Frac Plugs for Slightly Deformed Casing Horizontal Well Volume Fracturing

Zhang

Wang

2022

ACS Omega

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In view of the need for slightly deformed casing horizontal well fracturing, a new dissolvable frac plug has been designed using mechanical and material methods. The results of simulation analysis, laboratory research, and field test verification show that: (1) the integral half-split inlaid tooth slip and implicit-shaped single sealing element are adopted. Under the same pressure resistance index, the outer diameter and the total length of the frac plug are small, the inner diameter is big, and the pressure resistance downhole passing performance are better. (2) Using dissolvable magnesium-based powder, hydrogenated butadiene-acrylonitrile rubber, fluororubber polyglycolic acid, and the cellulose fiber and coating process, the solubility of the frac plug is observed to be more reliable. (3) Using the structural modular design, the frac plug has outstanding advantages in terms of on-site installation, preventing early seat sealing, self-separation after release, less dissolvable matter, and so on. (4) The finite element simulation and physical simulation experiments show that 121.36 mm ID casing with the frac plug can tolerate deformation in the range of 15 mm, which meets the needs for the casing usage. The temperature increases from 60 to 98 °C, and the maximum sustainable pressure differential decreases from 7.6 to 11.2 h at 70 MPa without any leakage. The frac plug can be completely dissolved within 300 h, and the final size of the residual solid is less than 0.3 mm. (5) In field trials of eight wells, through the minimum set of change inner diameter of 107 mm, the maximum wellhead fracturing pressure is 83.9 MPa in the formation, with the temperature ranging from 36 to 110 °C, and the plug can be completely self-dissolved in 16 days (the shortest time that has been found). After the fracturing operation with this dissolvable frac plug, the average daily oil production is maintained as high as 10.45 t with 22,000 m 3 gas production. A new dissolvable frac plug tool solves the problem of continuous fracturing in slightly casing variable wells, restores the full bore of the wellbore after staged fracturing, and realizes the production of oil and gas wells without drilling plug and the smooth implementation of follow-up measures. It has a wider application range, higher efficiency, safety, and economy. It is of great significance for industrialized staged fracturing of unconventional oil and gas horizontal wells and platform wells.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Experimental and Computationalmentioning

confidence: 99%

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Study and Field Trials on Dissolvable Frac Plugs for Slightly Deformed Casing Horizontal Well Volume Fracturing

Zhang

Wang

2022

ACS Omega

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“…In general, it is classified into linear ultrasonic and nonlinear ultrasonic technology. Linear ultrasonic technology is widely used for the characterization of moduli measurement [11][12][13][14][15] and cracks [16,17]. And few researcher characterized mechanical property, such as yield strength [18,19] and tensile strength [20], using linear ultrasonic technology.…”

Section: Introductionmentioning

confidence: 99%

Research on nonlinear ultrasonic method for evaluating the mechanical properties of 3D printing aluminum alloy

Wang,

Jiang,

Kou

et al. 2024

Meas. Sci. Technol.

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Micro defects, such as pore and inclusions, inevitably appear in the forming process of 3D printed materials, which would affect the mechanical properties of materials. Therefore, a nondestructive testing method is urgently needed to evaluate the effect of these micro defects on the mechanical properties of materials. In the present work, by using a nonlinear ultrasonic testing technology, mechanical test and characterization of material microstructure, the relationship between the relative acoustic nonlinearity parameter, tensile strength and material defect ratio of 3D printed aluminum alloy specimens under different scanning powers is investigated. The analysis results show that the greater the material defect ratio is, the smaller the tensile strength is and the greater the relative acoustic nonlinearity parameter is, and the relative acoustic nonlinearity parameter could be used to evaluate the strength of materials. Moreover, fatigue damage induced by high cycle fatigue loading test in the first stage of early performance degradation, the results of nonlinear ultrasonic testing show that the relative acoustic nonlinearity parameter presents an increasing trend as the fatigue load increases. By observing changes in material microstructure, it is found that the increasing acoustic nonlinearity parameter is due to the directional coarsening degree of the precipitated phase increasing, which shows that relative acoustic nonlinearity parameter is very sensitive to the change of material microstructure. The above results show that, the nonlinear ultrasonic testing technology can quantitatively evaluate and predict the mechanical performance and early performance degradation of 3D printing aluminum alloy.

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“…Gasteau et al [16] reported a method of laser generation and detection of Rayleigh waves to determine the elastic constants of cubic symmetric microcrystals. Zou et al [17] proposed a LU Rayleigh wave method for the nondestructive measurement of the elastic modulus of the laser cladding layer. They obtained the distribution of elastic modulus of materials by using the relationship between Rayleigh wave and elastic modulus.…”

Section: Introductionmentioning

confidence: 99%

High Temperature Mechanical Constants of TC4 alloy Detected by Laser Ultrasonic

Chen

Zhang

et al. 2023

Preprint

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Mechanical constants are the fundamental parameters for characterizing the mechanical properties of materials. Laser ultrasonic is a new non-destructive testing method characterized by long-range and non-contact. It is particularly suitable for detecting the mechanical properties of materials in harsh environments. TC4 alloy is one of the most important alloys for the production of engine blades, which is working at a high temperature of about 300–500℃. In this paper, the mechanical constants (elastic modulus and Poisson's ratio) of TC4 alloy at high temperatures are studied based on the finite element method. The mechanical constants are determined by their relation to the velocity of the ultrasonic wave. The finite element model of the laser-induced multi-mode wave at room temperature is established. Compare with the experimental results, the Rayleigh wave velocity error is 1.70%, and the longitudinal wave velocity error is 1.18%. The numerical results agree well with the experimental results, which confirms the correctness of the model. On this basis, further inversion of elastic modulus and Poisson's ratio of TC4 alloy at high temperature. It is found that elastic modulus and Poisson's ratio of TC4 alloy have a quadratic relationship with temperature. The mechanical constants at high temperatures are predicted, and the relative error is less than 4%. In this paper, the numerical results are in good agreement with the theoretical values, which verifies the validity and reliability of the model. It provides a reference for the further use of laser ultrasonic to determine the mechanical properties of materials at high temperatures.

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Measurement of elastic modulus of laser cladding coatings by laser ultrasonic method

Cited by 15 publications

References 33 publications

Study and Field Trials on Dissolvable Frac Plugs for Slightly Deformed Casing Horizontal Well Volume Fracturing

Study and Field Trials on Dissolvable Frac Plugs for Slightly Deformed Casing Horizontal Well Volume Fracturing

Research on nonlinear ultrasonic method for evaluating the mechanical properties of 3D printing aluminum alloy

High Temperature Mechanical Constants of TC4 alloy Detected by Laser Ultrasonic

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