Relevant bibliographies by topics / Irreparable failure

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  4. Conference papers

Academic literature on the topic 'Irreparable failure'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Irreparable failure"

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Ding, Xue Cheng, Zheng You He, and Min Yu. "Traction Substation Electrical Main Connection Reliability Analysis." Advanced Materials Research 433-440 (January 2012): 7293–99. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.7293.

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Traction substation reliability is of vital importance for railway transportation safety. To illustrate traction substation reliability, irreparable and reparable reliability models of three types of traction substation Electrical main connection have been established. Based on analysis of simple series and parallel reliability system, system irreparable reliability model is analyzed. The ways of how to get mean time to failure (MTTF) and mean time to first failure (MTTFF) of reparable system are achieved. By comparative analysis of the value of MTTF and MTTFF among three kinds of traction substation main connection reparable and irreparable system, some useful conclusions are found.
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Tomihara, Tomohiro, Yusuke Hashimoto, Shinji Takahashi, Masatoshi Taniuchi, Junsei Takigami, Shiro Okazaki, and Nagakazu Shimada. "Risk Factors Related to the Presence of Meniscal Injury and Irreparable Meniscal Tear at Primary Anterior Cruciate Ligament Reconstruction." Orthopaedic Journal of Sports Medicine 9, no. 3 (March 1, 2021): 232596712198903. http://dx.doi.org/10.1177/2325967121989036.

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Background: Few studies have attempted to identify risk factors associated with irreparable meniscal tears at anterior cruciate ligament reconstruction (ACLR) and to describe follow-up data, such as the failure rate, after meniscal repair. Purpose: To investigate the associations of age, sex, body mass index (BMI), time to surgery (TTS), and preinjury Tegner score with the presence of meniscal injuries and irreparable meniscal tears at primary ACLR. Study Design: Cross-sectional study; Level of evidence, 3. Methods: A retrospective review was performed on 784 patients who underwent primary ACLR by a single surgeon between 2005 and 2017 (406 men and 378 women; mean age, 25.8 years; mean BMI, 23.1; median TTS, 3 months; median preinjury Tegner score, 7). All patients had a minimum follow-up of 12 months (mean postoperative follow-up, 33.0 months). Multivariate logistic regression analysis was conducted to determine the association of patient variables with the presence of meniscal injuries and irreparable meniscal tears during primary ACLR. Results: The risk factor for medial meniscal injuries was TTS ≥3 months (odds ratio [OR], 4.213; 95% CI, 3.104-5.719; P < .001). The presence of irreparable medial meniscal tears increased with older age (OR, 1.053; 95% CI, 1.024-1.084; P < .001), higher BMI (OR, 1.077; 95% CI, 1.003-1.156; P = .042), and TTS ≥3 months (OR, 1.794; 95% CI, 1.046-3.078; P = .034). On multivariate analysis, none of the variables were significantly associated with lateral meniscal injuries and irreparable meniscal tears. The failure rate, defined as patients who needed additional medial meniscal surgery after medial meniscal repair, was 4.6%. Conclusion: Time from ACL injury to reconstruction of ≥3 months was strongly associated with medial meniscal injuries and irreparable medial meniscal tears at primary ACLR. Older age and increased BMI were also risk factors for the presence of irreparable medial meniscal tears at ACLR.
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Pogorzelski, Jonas, Kyle J. Muckenhirn, Justin J. Mitchell, J. Christoph Katthagen, Jason M. Schon, Kimi D. Dahl, Alan M. Hirahara, et al. "Biomechanical Comparison of 3 Glenoid-Side Fixation Techniques for Superior Capsular Reconstruction." American Journal of Sports Medicine 46, no. 4 (December 27, 2017): 801–8. http://dx.doi.org/10.1177/0363546517745626.

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Background: Superior capsular reconstruction (SCR) was recently introduced as a treatment for irreparable superior rotator cuff tears in younger patients. Purpose/Hypothesis: The purpose was to assess the biomechanical strength of 3 methods for fixation of the graft to the glenoid for SCR. It was hypothesized that a 4-anchor technique would provide greater load to failure than 3-anchor techniques. Study Design: Controlled laboratory study. Methods: Thirty-six cadaveric specimens were randomized into 3 groups of previously established glenoid-side graft fixation techniques: (1) three 3.5-mm knotless screw-in anchors, (2) three 3.0-mm knotless push-in anchors, and (3) a 4-anchor hybrid construct with two 3.0-mm knotted push-in anchors and two 2.9-mm knotless push-in anchors. The repairs were cyclically loaded at 0.5 Hz from 10 to 200 N, then pulled to failure. Elongation, stiffness, maximum load at failure, and mode of failure were recorded and calculated. Results: There were no significant differences in graft elongation or stiffness among the 3 techniques ( P > .37 and P > .26, respectively). Maximum load to failure was significantly greater in technique 1 (mean ± SD, 427.85 ± 119.70 N) than technique 3 (319.5 ± 57.60 N) ( P = 0.024). There were no significant differences in load to failure between techniques 1 and 2 or between techniques 2 and 3. Conclusion: Glenoid-side graft fixation with 3 threaded 3.5-mm suture anchors showed a significant superior pull-out strength when compared with a 4-anchor hybrid technique and thus might be recommended in SCR for patients with irreparable superior rotator cuff tears to achieve maximum stability. Clinical Relevance: SCR presents a novel alternative for treatment of irreparable superior rotator cuff tears in younger patients. Glenoid fixation is essential to provide adequate fixation of the graft to prevent the humeral head from rising and to restore normal biomechanics.
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Yoon, Jeong Yong, Paul Shinil Kim, and Chris Hyunchul Jo. "Clinical and Radiological Results after Arthroscopic Superior Capsular Reconstruction in Patients with Massive Irreparable Rotator Cuff Tears." Clinics in Shoulder and Elbow 21, no. 2 (June 1, 2018): 59–66. http://dx.doi.org/10.5397/cise.2018.21.2.59.

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BACKGROUND: Massive, irreparable rotator cuff tears (RCTs) are a challenging clinical problem in young patients. In recent years, arthroscopic superior capsular reconstruction (ASCR) is a popular treatment in the massive, irreparable RCTs. However, studies reporting clinical results of ASCR are rare in the literature.METHODS: Between 2013 and 2015, six patients underwent ASCR. One patient treated with dermal allograft, while five patients with autogenous fascia lata graft. Demographic data, as well as preoperative and last follow-up clinical data including pain, range of motion (ROM), strength, American Shoulder and Elbow Surgeons system, the Constant system, the University of California at Los Angeles system, the Simple Shoulder Test, and the Shoulder Pain and Disability Index system were obtained. Acromiohumeral distances and Hamada classification were measured on standard anteroposterior x-ray.RESULTS: All patients were men, and the average age was 59.5 ± 4.18 years (range, 53?65 years).The minimum follow-up was 18 months with a mean follow-up was 27.33 ± 7.58 months (range, 18?36). All patients had postoperative improvement in pain scores and functional scores. The ROM and strength did not improve after surgery. The Hamada score progressed of radiographic stage in 2 patients. In the case of dermal allograft, there was graft failure 6 weeks after ASCR.CONCLUSIONS: Our results support the ASCR as a viable treatment for surgical salvage in massive, irreparable RCTs. This treatment option may provide patients with decreased pain and increased function. And studying our case of dermal allograft failure provides opportunities to decrease graft failure in ASCR using dermal allograft.
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Ho, Jason C., Liam Kane, Michael A. Stone, Anthony A. Romeo, Joseph A. Abboud, and Surena Namdari. "Arthroscopic débridement of irreparable rotator cuff tears: predictors of failure and success." Journal of Shoulder and Elbow Surgery 29, no. 4 (April 2020): e118-e123. http://dx.doi.org/10.1016/j.jse.2019.08.010.

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Dossey, Terry, Steve Easley, and B. Frank Mccullough. "Methodology for Estimating Remaining Life of Continuously Reinforced Concrete Pavements." Transportation Research Record: Journal of the Transportation Research Board 1525, no. 1 (January 1996): 83–90. http://dx.doi.org/10.1177/0361198196152500109.

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A methodology was developed for estimating the remaining life of a nonoverlaid continuously reinforced concrete pavement. The models presented use several key predictors: the early-age crack distribution pattern in the concrete caused by volumetric changes, the coarse aggregate type used, and the presence or absence of a swelling subgrade that will accelerate the rate of failure development in later life due to dynamic loadings. Considering these factors, the models can accurately estimate the additional 18-kip equivalent single axle loads (ESALs) that will take the pavement from its current condition in terms of failures per mile (FPM) to a user-defined “failure threshold,” such as 10 or 15 FPM. Using traffic models developed in another study, the number of additional ESALs to failure can be translated into time to failure for planning purposes. The overall objective of the analysis is to determine the optimum time to overlay—before failure and preferably before the onset of irreparable damage to the pavement.
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Pelegrine, Rina Andréa, Augusto S. Kato, Iris NB Seckler, Carlos E. da Silveira Bueno, Sérgio L. Pinheiro, Débora AN Leite Lima, and Danielle FS de Souza. "Impact of Mechanical Load of Three Post and Core Systems: CAD/CAM-fabricated Glassfiber, Prefabricated Glassfiber Customized with Composite Resin, and Cast Metal Posts and Cores." Conservative Dentistry and Endodontic Journal 5, no. 2 (2020): 36–41. http://dx.doi.org/10.5005/jp-journals-10048-0064.

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ABSTRACT Aim and objective This study assessed the fracture resistance and failure mode frequencies in three post and core systems: CAD/CAM-fabricated glassfiber post and core, glassfiber post and core customized with composite resin, and cast metal post and core. Materials and methods After endodontic obturation and the post space preparation, 30 extracted mandibular premolars were distributed into three groups (n = 10): Group GFP: glassfiber post and core customized with composite resin, Group CPC: cast metal, and Group CAD/CAM: CAD/CAM-fabricated glassfiber post and core. All the specimens were luted with RelyX U200 cement, submitted to thermomechanical cycling, and then submitted to a compression test, applied at a 45° angle relative to the long axis of the tooth, until fracture. The fracture resistance data were submitted to ANOVA complemented by the Tukey test and the failure mode data by Fisher's exact test with the Freeman–Halton extension (α = 5%). Results There was no significant difference between the fracture resistance values found for groups CPC and CAD/CAM (p >0.05), and these values were significantly higher than those found for Group GFP (p < 0.05). In respect to failure mode frequencies, Group CAD/CAM had equal frequencies of adhesive and cohesive failures, Group GFP had exclusively cohesive failures in the composite core buildup, and Group CPC had 80% of cohesive failures in dentin vs 20% of adhesive failures (p < 0.001). Conclusion The fracture resistance of CAD/CAM-fabricated glassfiber posts and cores was comparable to that of cast posts and cores, and they were not associated with irreparable root fractures. Therefore, CAD/CAM-fabricated glassfiber posts and cores can be considered an effective method for restoring endodontically treated teeth. Clinical significance CAD/CAM system proved to be a viable alternative to cast posts and cores, since they were less associated with irreparable root fractures. How to cite this article Seckler INB, da Silveira Bueno CE, Kato AS, et al. Impact of Mechanical Load of Three Post and Core Systems: CAD/CAM-fabricated Glassfiber, Prefabricated Glassfiber Customized with Composite Resin, and Cast Metal Posts and Cores. Cons Dent Endod J 2020;5(2):36–41.
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Voela, Angie. "Catastrophe Survived? The Failure of the Tragic in Moira Buffini's Welcome to Thebes." Somatechnics 3, no. 1 (March 2013): 133–48. http://dx.doi.org/10.3366/soma.2013.0082.

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In Moira Buffini's Welcome to Thebes (2010) Antigone fails to reach her tragic destiny, the city of Thebes fails to become an autonomous democratic state, and the audience fails to witness the splendour of the ancient heroine. In this paper I consider these three failures as interrelated and dependent upon one another, arguing, along psychoanalytic lines, that they register changing attitudes towards knowledge and the Other which ultimately determine the meaning of ‘failure’. However, in order to better appreciate the contemporary scope of failure, I draw on both Lacan and Baudrillard, highlighting convergences between the two theorists. In particular, I argue that Lacan's notion of the inconsistent Other can be supplemented by Baudrillard's notion of the impossible exchange. Further, the relevance of these notions for theatre and spectatorship is discussed in detail, as they both invite spectators to reflect on their own involvement in the scene they witness and the ontological conditions of (their own) absence and presence. Failure to do so possibly indicates an irreparable loss of the critical capacity which we have always considered central to radical thought.
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Maalik, Umeed. "Marine Conservation from Microplastics." International Journal of Scientific & Engineering Research 12, no. 5 (May 25, 2021): 1112–13. http://dx.doi.org/10.14299/ijser.2021.05.06.

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Environment is in continuous change to serve life in various forms on land and water. The cost of these services result negative changes in environment resulting pollution. It moves to oceans either it is generated inside or outside. Plastic pollution is most irreparable among these. It tends to minimize and stop environmental rich activities. Furthermore it moves towards destruction of physical and biological systems in marine environments. It results ecosystems damage and economy failure.
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Kholinne, Erica, Yucheng Sun, Jae-Man Kwak, Hyojune Kim, Kyoung Hwan Koh, and In-Ho Jeon. "Failure Rate After Superior Capsular Reconstruction With Achilles Tendon–Bone Allograft for Irreparable Rotator Cuff Tears." Orthopaedic Journal of Sports Medicine 9, no. 5 (May 1, 2021): 232596712110022. http://dx.doi.org/10.1177/23259671211002280.

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Background: Superior capsular reconstruction (SCR) is an alternative to reverse shoulder arthroplasty for irreparable rotator cuff tears (IRCTs). The reconstructed capsule acts as a static restraint to prevent superior migration of the humeral head. Traditional SCR uses a fascia lata autograft, which has shown failure at the greater tuberosity. An Achilles tendon–bone allograft has been proposed to improve the failure rate. Purpose: To evaluate the surgical outcomes of SCR using an Achilles tendon–bone allograft for the treatment of IRCTs. Study Design: Case series; Level of evidence, 4. Methods: We retrospectively evaluated 6 patients with massive IRCTs who underwent SCR using an Achilles tendon–bone allograft between January 2017 and January 2018. Clinical outcomes were assessed using range of motion, the American Shoulder and Elbow Surgeons score, and the visual analog scale for pain. The acromiohumeral distance and the status of graft integrity were evaluated using serial magnetic resonance imaging. Second-look arthroscopy surgery was performed to evaluate graft integrity at the mean of 7.5 months postoperative. Results: The mean ± SD clinical follow-up period was 14.5 months (range, 12-17 months). The American Shoulder and Elbow Surgeons and visual analog scale scores improved from 42.8 ± 11.9 and 4.0 ± 1.2 to 62.1 ± 14.7 and 2.8 ± 1.4, respectively. Forward flexion and external rotation improved from 98° ± 36° and 58° ± 4° to 123° ± 20° and 39° ± 8°, respectively. The acromiohumeral distance improved from 3.9 ± 0.8 mm to 6.4 ± 2.2 mm at final follow-up. However, second-look arthroscopy at a mean of 7.6 months postoperatively confirmed a graft failure rate of 83.3%. Conclusion: SCR using an Achilles tendon–bone allograft for the treatment of IRCTs had a high graft failure rate among patients in this case series.
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Dissertations / Theses on the topic "Irreparable failure"

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Tesaříková, Martina. "Zjišťování a specifikace neodstranitelných vad a poruch staveb." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-232528.

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The diploma thesis deals with problems of identification and specification of insurmountable impairments with a focus on moisture. The aim of my work is generally explain what the fault and failure, what is their cause, and the overall approach in this area. Next determine the difference between removable and irremovable defect. Part of this work is a chapter devoted to surveys of buildings, which are an integral part in detecting defects, failures and their root structures. Another section is devoted to the main subject of work - moisture, approach this issue and the problems caused by moisture in the structure. At the end of this chapter is about ways of reducing the moisture in structures. The last section is on the case (the object affected moisture) approach procedure for identifying and assessing these impairments in practice.
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Book chapters on the topic "Irreparable failure"

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Hackney, Roger. "Case Example 1: Failure of Rotator Cuff Repair." In Massive and Irreparable Rotator Cuff Tears, 355–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-662-61162-3_38.

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Ergün, Selim, Umut Akgün, and Mustafa Karahan. "Biomechanics of Failure of Reverse Shoulder Arthroplasty in Rotator Cuff Tear Arthropathy." In Massive and Irreparable Rotator Cuff Tears, 339–44. Berlin, Heidelberg: Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-662-61162-3_36.

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Joannides, Alexis J., Bhuvaneish T. Selvaraj, and Siddharthan Chandran. "Stem cells and regenerative medicine." In Oxford Textbook of Medicine, edited by John D. Firth, Christopher P. Conlon, and Timothy M. Cox, 281–95. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198746690.003.0035.

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There is a great and unmet need for treatments that will deliver restorative solutions to patients with diseases hitherto considered irreparable. Advances in human pluripotent stem cell biology and gene-editing technology offer unprecedented opportunities for both drug discovery and translational therapies that will likely herald a new chapter of regenerative and personalized medicine. Consideration of three major target conditions for regenerative medicine—Parkinson’s disease, heart failure, and diabetes mellitus—emphasizes distinct and common challenges that must be overcome in order to realize the stem cell promise. Novel approaches to induce pluripotency from differentiated somatic cells and targeted genetic manipulation of stem cell populations, along with new insights derived from improved understanding of human pluripotent stem cell biology and increased recognition of endogenous stem cells, offers a range of mechanisms through which stem cells may be therapeutic.
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Bernard, J. F. "Melancomic Time in Late Shakespeare." In Shakespearean Melancholy, 174–212. Edinburgh University Press, 2018. http://dx.doi.org/10.3366/edinburgh/9781474417334.003.0005.

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The chapter suggests that late Shakespearean drama develops a melancomic philosophy predicated on the yoking together of past memories of sorrow and a present sense of gratification. The late plays’ the staging of a miraculous resolution to powerful trauma stems from taxonomies related to comic melancholy rather than from the tragic overtones of their initial premises. In late Shakespeare, irreparable past tragedies, exacerbated by lengthy time gaps, haunt seemingly joyous conclusions. This melancholy suggests a voluntary sense of comic failure, since the melancomic quality of the plays infers both the legitimising of melancholy as a valid comic emotion and the nostalgic impossibility of return to a dramatic state of bliss. This emotional response transcends generic quagmires in representing a highly pleasurable feeling that can be understood as a precursor to nostalgia. Lastly, the chapter examines The Two Noble Kinsmen as evidence that, despite its transformative achievements, Shakespeare’s comic melancholy loses out in the dramatic landscape of the seventeenth-century, being supplanted by works predicated on a focal return towards humourality and the increased dramatic presence of medical practitioner characters.
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Conference papers on the topic "Irreparable failure"

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Mamat, Nur Suriani. "The Impact of Diagenesis and Compaction on Drilling Failure Detection." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61858.

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An important problem during drilling operation is wellbore instability; a complex problem caused by mechanical and chemical related factors. Even the best drilling practice could evade small instability problems that later may become irreparable. The risk of wellbore stability is mostly related to drilling, tripping and reaming activity with, including lost circulation, sloughing repair and loss of penetration. In this paper, the impact of historical and state of diagenesis and compaction on borehole instability has been studied, systematized, and used for general modelling. All the concepts are presented as symbolic concepts in a hierarchical order and linked in a chain of cause-effect relationships to wellbore failures. Through surveillance of drilling parameters, diagenesis and compaction were identified through formation hardness, well depth, shale type, and cuttings/cavings characteristic. From the analysis, kaolinite, which normally exists in intermediate diagenesis, is most likely to cause bit balling when hydrated. Smectite, which is water-sensitive clay, would cause chemical wellbore instability in water-based mud. Carbonates formation such as dolomite and limestone is more likely to result in lost circulation as compared to shale. Our work demonstrates how state of diagenesis and compaction could influence wellbore instability condition. This knowledge could be applied to understand the behavior of rock formation being drilled and would influence the prediction of probable failures as an end result. The method presented here integrates theoretical knowledge and real-time drilling data to envisage the most likely failure.
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Kirkwood, Robert, and James A. Sherwood. "Sustained CAD Integration: A Proposed Method to Resolve Deficiencies Related to Data Export/Import." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-12243.

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Export/import based CAD integration is perceived by industry to be a second-rate integration. There have been various proposals to enhance such integration by refining and extending formats, generally via new formatting standards. The basic format for solid models has been stable for the last 20 years, so perhaps formatting standards are not the problem. In this paper, a different view of export/import issues for CAD models is proposed and evaluated using a rudimentary solid model where the export/import translation is perfect, but sustained integration still fails. The failure is found to be due to resequenced identifiers on the geometric entities, i.e. id-resequence. Various ways that id-resequence manifests itself in broken integration for subsequent versions of the solid model are explored in examples where the id-resequencing problem may remain hidden through the first few revisions before it “breaks” the integration. An explanation as to why integration via export/import is sometimes unavoidable is discussed. Manually fixing the id-resequence enables sustained integration and solves most of the integration problems associated with export/import. Practical alternatives to manually fixing are assessed where one might repair or prevent the id-resequence problem, e.g. format/standard-extensions or application protocols, are explored and a proposed (recommended) new approach using virtual persistent identifiers is presented. This new approach offers a way to solve the id-resequence problem entirely from the import side. The approach also offers a way to repair/recover broken integration after the point where most might believe the damage has rendered the integration irreparable. The results of an assessment for various proprietary CAD systems and also for STEP are evaluated. The evaluation shows that some applications are nearly ready to support sustained integration via export/import, while other applications require varying degrees of effort. The potential for virtual persistent identifiers to facilitate migration to STEP as the long-term solution for sustained integration is discussed.
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