Relevant bibliographies by topics / Scalp defect

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Scalp defect'

Author: Grafiati
Published: 5 June 2025
Last updated: 16 July 2025

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Journal articles on the topic "Scalp defect"

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Ghoncheh, Mahdi, and Forood Salehi. "Repair of a Scalp Defect with Punctate Skull Fenestration and Skin Grafting." Journal of Advances in Medical and Biomedical Research 30, no. 143 (2022): 566–69. https://doi.org/10.30699/jambs.30.143.566.

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<strong>Abstract</strong> Reconstructing scalp defects can be challenging for a plastic surgeon. For this purpose, different procedures such as primary repair and coverage with skin grafts or flaps can be considered. Sometimes, the external table of the skull can be removed completely to the diploic space. At the same time or after the formation of granulation tissue, the diploic space can be covered with split-thickness skin grafting. In this article, we have reported the reconstruction of a traumatic scalp defect in a one-year-old baby. There was a large defect in the left temporoparietal ar
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Mueller, Cornelia Katharina, Rolf-Dieter Bader, Christian Ewald, Rolf Kalff, and Stefan Schultze-Mosgau. "Scalp Defect Repair." Annals of Plastic Surgery 68, no. 6 (2012): 594–98. http://dx.doi.org/10.1097/sap.0b013e318218f32a.

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Mendoza Velez, Maria de los Angeles, Gabriel Sandoval Macias, and Liliana Aguirre Cazares. "Orticochea flap for a massive scalp defect closure in a pediatric patient: literature review and case report." International Journal of Research in Medical Sciences 9, no. 8 (2021): 2489. http://dx.doi.org/10.18203/2320-6012.ijrms20213106.

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Scalp defects are still challenging to the surgeon because of the poor elasticity of the soft tissue overlying the calvarium. Defect size, location, and skin characteristics rule the reconstructive options available. Orticochea flap is an excellent option for scalp defects reconstruction. We present a case of a pediatric patient with a massive occipital scalp defect following an animal aggression that was successfully reconstructed with an Orticochea modified flap.
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An, Jung Kwon, Seong Oh Park, Lan Sook Chang, Youn Hwan Kim, and Kyunghyun Min. "Reconstruction of a temporal scalp defect without ipsilateral donor vessel possibilities using a local transposition flap and a latissimus dorsi free flap anastomosed to the contralateral side: a case report." Archives of Craniofacial Surgery 24, no. 3 (2023): 129–32. http://dx.doi.org/10.7181/acfs.2023.00129.

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Scalp defects necessitate diverse approaches for successful reconstruction, taking into account factors such as defect size, surrounding tissue, and recipient vessel quality. This case report presents a challenging scenario involving a temporal scalp defect where ipsilateral recipient vessels were unavailable. The defect was effectively reconstructed utilizing a transposition flap and a latissimus dorsi free flap, which was anastomosed to the contralateral recipient vessels. Our report underscores the successful reconstruction of a scalp defect in the absence of ipsilateral recipient vessels,
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Srivastava, Saket, and Pradeep Gupta. "Reconstruction of scalp with local axial flaps." International Journal of Otorhinolaryngology and Head and Neck Surgery 6, no. 9 (2020): 1692. http://dx.doi.org/10.18203/issn.2454-5929.ijohns20203575.

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&lt;p&gt;&lt;strong&gt;Background:&lt;/strong&gt; The scalp is a unique part of the human body and various etiological factors, such as tumour extirpation, infection, burns, or trauma, can lead to scalp defects. Primary closure, skin grafting, local flaps, tissue expansion or free tissue transfer are modalities available for scalp reconstruction. In this article, the authors share their institutional experience using various local flaps concerning the size, location, depth of defect and the quality of surrounding tissue.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods:&lt;/strong&gt; From September 20
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Kim, Jin Woo, and Do Hun Kim. "Sternocleidomastoid Myocutaneous Flap for Scalp Reconstruction." Plastic Surgery Case Studies 5 (January 1, 2019): 2513826X1982879. http://dx.doi.org/10.1177/2513826x19828792.

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Scalp defects may occur due to various causes, such as head trauma. For reconstruction of the defect, a primary closure process, skin grafting, or local flap use are the foremost choices when the defect area is not wide. However, repair is difficult when the wound condition further deteriorates due to chronic inflammation. In this condition, free tissue transfer or a pedicled flap is required to restore normal blood supply. The sternocleidomastoid (SCM) flap is conventionally raised as a superiorly or inferiorly based pedicled flap, easily harvested to rectify a nearby scalp defect; additional
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Sokoya, Mofiyinfolu, Emily Misch, Aurora Vincent, et al. "Free Tissue Reconstruction of the Scalp." Seminars in Plastic Surgery 33, no. 01 (2019): 067–71. http://dx.doi.org/10.1055/s-0039-1678470.

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AbstractReconstruction of scalp defects can be accomplished by many methods, but larger defects, especially those in which the periosteum is absent or calvarial defects are present, require free tissue transfer. Various methods of scalp reconstruction, as guided by the defect components and size, are presented herein, with a focus on free tissue transfer. Different free flaps for scalp reconstructed are described with a comparison of their advantages and disadvantages. Overall, free tissue transfer for scalp defects provides a reliable, durable, and cosmetically adequate reconstructive option.
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Nangole, F. W., and S. O. Khainga. "Pedicle Temporalis Fascial Flap with Axial Scalp Flap Obviates Need of Free Flap in Extensive Scalp Wound." Case Reports in Surgery 2017 (2017): 1–3. http://dx.doi.org/10.1155/2017/4821329.

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Extensive scalp defect with exposed bone is best reconstructed with flaps. Majority of these wounds are now routinely reconstructed with free flaps in many centers. Free flaps however require lengthy operative time and may not be available to all patients, where possible less extensive options should thus be encouraged. A sixty-eight-year-old patient presented to us with a Marjolin’s ulcer on the vertex of the scalp. After wide local excision a defect of about 17 cm and 12 cm was left. The defect was successfully covered with a combination of an ipsilateral pedicle temporalis fascial flap and
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Pratama, Yanuar Ari, Iswinarno Doso Saputro, and Zin Mar Aung. "Reconstruction of Defects on Post Electric Burn Injury Scalp with Bone Exposed: Case Series." Biomolecular and Health Science Journal 6, no. 2 (2023): 152–56. http://dx.doi.org/10.4103/bhsj.bhsj_38_23.

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Electrical burns typically result in severe tissue damage at a localized area, where the generated heat can lead to necrosis of one or both calvarial tables. This study reports four cases with scalp defects due to electrical burns reconstructed. In all cases, the scalp was the entrance site. A local flap and a skin graft were used to cover scalp defect and secondary defect, respectively. At 5–7 days postoperative, the flap survived with no necrosis or complications; satisfactory cosmesis and preservation of scalp contour were achieved. Successful scalp reconstruction requires meticulous preope
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Dzinotyiwei, Daniel, Kazadi Kalangu, Nathaniel Zimani, and Maximilian Dzowa. "OTHR-11 A CASE SERIES OF OUTER TABLE CALVARIAL DECORTICATION AS A VIABLE OPTION TO ACHIEVE SKULL COVER AFTER RESECTION OF LARGE SCALP TUMORS." Neuro-Oncology Advances 6, Supplement_2 (2024): ii6. http://dx.doi.org/10.1093/noajnl/vdae147.024.

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Abstract A showcase of a scalp cover technique that offers a simple solution to a unique challenge posed by excision of late presenting large scalp tumors in a third-world setting through a case series of 2 patients with extensive scalp malignancy requiring wide local excision with striping of the pericranium. Outer table skull drilling resulted in granulation tissue formation allowing for defect cover by wound contraction. Unique circumstances in a third-world setting compounded by the COVID-19 pandemic restrictions allowed for observation of the natural history of the progression of the scal
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Dissertations / Theses on the topic "Scalp defect"

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Siegl, Manuel. "Atomic-scale investigation of point defect interactions in semiconductors." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10043636/.

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Miniaturisation of computer hardware has increased the transistor density in silicon devices significantly and is approaching the ultimate physical limit of single atom transistors. A thorough understanding of the nature of materials at the atomic scale is needed in order to increase the transistor density further and exploit more recent technology proposals. Moreover, exploring other materials with more desirable characteristics such as wide band gap semiconductors with a higher dielectric strength and optical addressability are paramount in the effort of moving to a post-silicon era. Scannin
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Chen, Ing-yi 1962. "Efficient reconfiguration by degradation in defect-tolerant VLSI arrays." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277195.

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This thesis addresses the problem of constructing a flawless subarray from a defective VLSI/WSI array consists of identical cells such as memory cells or processors. In contrast to the redundancy approach in which some cells are dedicated as spares, all the cells in the degradation approach are treated in a uniform way. Each cell can be either fault-free or defective and a subarray which contains no faulty cell is derived under constraints of switching and routing mechanisms. Although extensive literatures exist concerning spare allocation and reconfiguration in arrays with redundancy, little
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Gilbert, Mark R. "BCC metals in extreme environments : modelling the structure and evolution of defects." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:d972d28d-5d2d-4392-8cf5-fc5728dc74f6.

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Designing materials for fusion applications is a very challenging problem, requiring detailed understanding of the behaviour of materials under the kinds of extreme conditions expected in a fusion environment. During the lifetime of fusion-reactor components, materials will be subjected to high levels of neutron irradiation, but must still perform effectively at high operating temperatures and under significant loading conditions. Body-centred cubic (bcc) transition metals are some of the most promising candidates for structural materials in fusion because of their relatively high density, whi
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Atkinson, Kurt James William. "Atomic scale simulation of defects in bulk materials and monolayer surfaces." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.397160.

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Lazanu, Andrei. "The power spectrum and bispectrum of inflation and cosmic defects." Thesis, University of Cambridge, 2016. https://www.repository.cam.ac.uk/handle/1810/256999.

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Much of the recent progress in cosmology has come from studying the power spectrum of the cosmic microwave background (CMB). The latest results from the Planck satellite confirmed that the inflationary paradigm with the $\Lambda$CDM six-parameter model provides a very good description of the observed structures in the Universe. Even so, additional parameters, such as cosmic defects, are still allowed by current observational data. Additionally, many of the inflationary models predict a significant departure from Gaussianity in the distribution of primordial perturbations. Higher order statisti
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Xu, Tao. "Low-dimensional atomic-scale multiferroics in nonmagnetic ferroelectrics from lattice defects engineering." Kyoto University, 2017. http://hdl.handle.net/2433/227622.

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Upadhyay, Manas Vijay. "On the role of defect incompatibilities on mechanical properties of polycrystalline aggregates: a multi-scale study." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53041.

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The main objective of this thesis is to obtain critical insight on the role of crystalline incompatibilities in strain and curvature, induced in presence of line defects i.e. dislocations and disclinations, on the energy and geometry of specific features of the local microstructure, and on the bulk mechanical response of nanocrystalline/ultra-fine grained materials. To that end, studies are performed at the (1) inter-atomic and fine scale, and (2) at the mesoscale. The modelling approach is based on the field dislocation and disclination mechanics theory of continuously representated dislocati
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DePauli, Arianne. "Small Scale Vapor Pressure Deficit Changes Influence on Transpiration." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/613834.

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McBee, Ralph L. "Validation study of the Attention deficit scale for adults in diagnosing attention deficit hyperactivity disorders." Online full text .pdf document, available to Fuller patrons only, 2001. http://www.tren.com.

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Miller, Teresa L. "Attention-defict/hyperactivity disorder : a survey of assessment practices by school psychologists /." View online ; access limited to URI, 2005. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3188842.

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Books on the topic "Scalp defect"

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Dahoo, Pierre Richard, Philippe Pougnet, and Abdelkhalak El Hami. Nanometer-Scale Defect Detection Using Polarized Light. John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119329633.

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Koren, Israel. Defect and Fault Tolerance in VLSI Systems: Volume 1. Springer US, 1989.

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McCarney, Stephen B. Adult attention deficit disorders evaluation scale. Hawthorne Educational Services, 1996.

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McCarney, Stephen B. Adult attention deficit disorders evaluation scale. Hawthorne Educational Services, 1996.

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McCarney, Stephen B. Adult attention deficit disorders evaluation scale. Hawthorne Educational Services, 1996.

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Holland, Melissa L. ADHD-SRS manual (ADHD Symptoms Rating Scale). Wide Range, Inc., 2001.

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Holland, Melissa L. ADHD-SRS manual (ADHD Symptoms Rating Scale). Wide Range, Inc., 2001.

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Khare, Jitendra B. From contamination to defects, faults, and yield loss: Simulation and applications. Kluwer Academic Publishers, 1996.

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Symposium on Crystalline Defects and Contamination (2001 Nuremberg, Germany). Proceedings of the satellite symposium to ESSDERC 2001 Nuremberg/Germany: Crystalline defects and contamination : their impact and control in device manufacturing III ; DECON 2001. Edited by Kolbesen Bernd O, Electrochemical Society Electronics Division, European Solid State Device Research Conference (31st : 2001 : Nuremberg/Germany), and DECON 2001. Electrochemical Society, 2001.

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IEEE International Symposium on Defect and Fault Tolerance in VLSI Systems (1998 Austin, Tex.). Defect and fault tolerance in VLSI systems: Proceedings : 1998 IEEE International Symposium on Defect and Fault Tolerance in VLSI Systems : November 2-4, 1998, Austin, Texas. IEEE Computer Society Press, 1998.

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Book chapters on the topic "Scalp defect"

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Boyette, Jennings R. "Reconstruction of a Scalp Defect, Rotational Flap." In Matrix Head and Neck Reconstruction. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24981-5_9.

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Qian, Yunliang, Yixin Zhang, and Zan Li. "Defect Repair After Resection of Scalp Malignant Tumors." In Plastic and Reconstructive Surgery. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3400-8_12.

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Boyette, Jennings R. "Reconstruction of a Scalp Defect, O-S Rotational Flaps." In Matrix Head and Neck Reconstruction. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24981-5_10.

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Boyette, Jennings R. "Reconstruction of a Scalp Defect with an Advancement Flap." In Matrix Head and Neck Reconstruction. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24981-5_8.

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El-Darouti, Mohammad Ali, and Faiza Mohamed Al-Ali. "A Newborn with Scalp Defect and Terminal Limbs Anomalies." In Challenging Cases in Dermatology Volume 2. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-21855-3_4.

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Kakagia, Despoina D., and Andreas Gravvanis. "Composite Defect of Scalp and Calvarial Bone Following Oncological Resection." In Clinical Scenarios in Reconstructive Microsurgery. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-23706-6_2.

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Kakagia, Despoina, and Andreas Gravvanis. "Composite Defect of Scalp and Calvarial Bone Following Oncological Resection." In Clinical Scenarios in Reconstructive Microsurgery. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-319-94191-2_2-1.

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Faisal, Nadimul, Ömer Necati Cora, Muhammed Latif Bekci, et al. "Defect Types." In Structural Health Monitoring Damage Detection Systems for Aerospace. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72192-3_3.

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AbstractThis chapter provides an overview of the common types of defects found in various structural materials and joints in aircraft. Materials manufacturing methods (including large-scale production) have been established in the aircraft industry. However, as will be seen in this chapter, manufacturing defects and defects during in-service conditions are very common across all material types. The structural material types include metals, composites, coatings, adhesively bonded and stir-welded joints. This chapter describes the defect types as a baseline for the description of their detection with the methods of Chap. 10.1007/978-3-030-72192-3_5 to 10.1007/978-3-030-72192-3_8. Based on the understanding of the defect types, there is great expectation for a technical breakthrough for the application of structural health monitoring (SHM) damage detection systems, where continuous monitoring and assessment with high throughput and yield will produce the desired structural integrity.
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Colli, Benedicto Oscar, Carlos Gilberto Carlotti Junior, Ricardo Santos de Oliveira, and Guilherme Gozzoli Podolski Gondim. "Venous Compromise/Deep Venous Thrombosis During Parasagittal Meningiomas Resection." In Acta Neurochirurgica Supplement. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-61601-3_5.

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AbstractWe are reporting the case of JB, a 28-year-old male who presented to our hospital in 2009. The patient reported a progressive increase in a known mass that had been deforming their head since 2005. He had suffered from a first-time seizure four years later (in 2009). Neurological examination revealed a large tumor protruding in the parietal region, which was confirmed by CT. A subsequent MRI demonstrated a hyperostotic contrast-enhancing parasagittal tumor occluding the middle third of the superior sagittal sinus, with cortical veins joining the sinus adjacent to the tumor.The patient was taken to the OR for a craniotomy and a resection of the tumor with cranioplasty in the same setting. The tumor was exposed by using a straight incision on the scalp. A craniotomy was performed around the tumor by using multiple burr holes; now the bone could be separated from the dura and removed. The intradural tumor was exposed, and a cortical vein draining into the tumor could not be preserved. Some residual tumor was left close to the anterior part of the superior sagittal sinus. The dura was reconstructed with pericranium, and the bony defect was closed with titanium mesh. The patient woke up initially paraplegic, but 7 days later, he started with proximal movements in both legs. Unfortunately, he died suddenly in the second postoperative week, due to pulmonary embolism. The case is reviewed in this manuscript to analyze the contributing factors of the complications that were observed and to suggest management strategies to avoid them.
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Peltzer, Douglas L. "Wafer Scale Revisited." In Defect and Fault Tolerance in VLSI Systems. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4615-6799-8_2.

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Conference papers on the topic "Scalp defect"

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Williams, Cooper, Cecily Ryan, Douglas Cairns, Christopher Ridgard, and Jared Nelson. "Evaluation of SBCF and CCF Forming in Complex Shapes via a Unified Defect Scoring Index." In Vertical Flight Society 81st Annual Forum and Technology Display. The Vertical Flight Society, 2025. https://doi.org/10.4050/f-0081-2025-408.

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Stretch broken carbon fiber (SBCF) offers enhanced formability as compared to continuous carbon fiber (CCF). However, robust, quantitative evaluation of forming defects remains a challenge. This study introduces a unified formability index (UFI) that integrates multiple defect types, including texture anomalies, bridging, wrinkling, thickness variation, spring-back, and resin distribution variation (RDV), into a single weighted score. Each defect is ranked on a scale of 0-5 using normalized metrics with a tunable parameter, α, allowing users to balance defect magnitude and frequency as desired
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Kennelley, Kevin J., Ross M. Degerstedt, Mark E. Orazem, and J. Matthew Esteban. "Full-Scale Laboratory Evaluation of Parallel Anode CP Systems for Coated Pipelines with Comparison to 2 and 3-Dimensional Computer Models." In CORROSION 1995. NACE International, 1995. https://doi.org/10.5006/c1995-95528.

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Abstract This paper presents the results of full-scale laboratory tests to evaluate the performance of a magnesium ribbon cathodic protection system designed for a large diameter pipeline. Tests were conducted on a 305 cm section of 122 cm OD pipe externally coated with fusion bonded epoxy in a pit filled with various water resistivity environments (5,000, 20,000, and 100,000 ohm-cm). Parameters that were studied included the number of magnesium ribbon anodes connected to the pipe (one to four), coating defect size and shape (discrete or multiple circular defects versus a slit defect that ran
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Race, Julia, and Stephen Peet. "Assessment of Corrosion in Low Toughness Pipe Material." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02088.

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Abstract Corrosion is an increasing problem in ageing pipelines world-wide, and the conditions under which a corrosion defect fails have been the subject of extensive world-wide research in the last 30 years. Various organisations have conducted full-scale tests on artificial and real corrosion defects, which have allowed the development of defect assessment criteria. In modern linepipe with high toughness, smooth corrosion defects will fail by ductile initiation and plastic collapse. In this case, the remaining strength of pipelines can be assessed using codified methods. However, for low tou
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Shukla, Pavan K., Todd S. Mintz, Biswajit Dasgupta, and Jay Fisher. "Using Local Electrochemical Impedance Spectroscopy to Detect Coating Defects on Buried Pipelines." In CORROSION 2012. NACE International, 2012. https://doi.org/10.5006/c2012-01332.

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Abstract Local electrochemical impedance spectroscopy (LEIS) has been used to determine the micro-and macroscopic defect sites on coated coupons in a laboratory-scale setup. LEIS is conducted by applying a sinusoidal potential signal to a working electrode and then measuring the response of a particular location by placing two reference electrodes in the electrolyte above that location. Scale-up issues need to be resolved if LEIS is to be used for inspecting and identifying coating defects on the buried pipeline. The parameters such as the distance of the two-electrode system from the pipeline
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Peguero, Davie. "Interfacial Fractures FRP Repairs Applied to Seal Severly Corroded Leaking Pipes." In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-4278.

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Abstract Fiber Reinforced Polymer (FRP) repair systems on pipe substrates have been used successfully for leak sealing and for reinforcement. Due to corrosion, mechanical damage, or both, some small defects such as pinholes, cracked welds and small punctures can be repaired by such composite repair systems. The repair method consists of the design of a circumferential composite wrap which is laid-up and bonded to the pipe substrate, in the field, where a defect exists or is expected to exist. The effectiveness of the composite repair system is highly dependent on the adhesive fracture toughnes
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Chambers, Brian, Bostjan Bezensek, Sebastian Cravero, Pedro Olivo, and Octavio Albores. "Investigation of Sulfide Stress Crack Propagation Using Sour Pipe Burst in Tubulars with Simulated Defects under Pressure." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-20420.

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Abstract Seamless oil country tubular goods (OCTG) with defined chemistry and toughness, e.g. API 5CT C110, are utilized as production casing in sour wells globally. These grades must withstand high pressures and mild sour conditions to maintain the integrity of the well and, as such, should resist both sulfide stress crack (SSC) initiation and potential propagation from defects in service. A laboratory study was conducted to assess the tendency of crack propagation from two defined types of defects, electro-discharge machined (EDM) notches and fatigue cracks, simulating potential as-delivered
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Sibychan, Jerrin Job, Nicola Sorace, Jason Melnick, et al. "Use of Discrete Element Method to Troubleshoot Aesthetic Defects in Pharmaceutical Tablets." In Foundations of Computer-Aided Process Design. PSE Press, 2024. http://dx.doi.org/10.69997/sct.148066.

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Pharmaceutically elegant tablets are an expectation from pharmacists, health care providers and consumers for solid oral dosage forms. The presence of non-aesthetically pleasing defects in solid oral dosage forms can result in complaints back to the manufacturer and potentially non-compliance with medicines. The purpose of this study was to simulate and analyze the design of a tablet core and the aqueous film-coating process, to gain a better understanding of tablet defect generation, and to help eliminate the defects from the finished product. This evaluation employs Discrete Element Method (
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Vladova, Alla Yu. "Monitoring the Dimensions of Elongated Object Defects." In 2024 17th International Conference on Management of Large-Scale System Development (MLSD). IEEE, 2024. http://dx.doi.org/10.1109/mlsd61779.2024.10739500.

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Li, Ying, and Wei Yang. "YOLO-DHC:A Multi-scale method for PCB defect detection." In 2024 4th International Symposium on Artificial Intelligence and Intelligent Manufacturing (AIIM). IEEE, 2024. https://doi.org/10.1109/aiim64537.2024.10934579.

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Whelan, Bradley. "Internal Installation Pressure Effects on Composite Repairs." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-12986.

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Abstract Most composite repair installations take place with some amount of pressure in the pipe. The traditional design standards, ASME PCC-2 Article 4.1 and ISO 24817, each provide a design equation that includes consideration of installation pressure but the equations up to this point have been theoretical only and never tested. It is important to note that in the equations, an increasing installation pressure acts to reduce the required composite repair thickness. This experimental test program studied the effects of internal pipe pressure during installation on composite reinforcement sys
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Reports on the topic "Scalp defect"

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Denys, R. M. L51712 Fracture Behavior of Large-Diameter Girth Welds - Effect of Weld Metal Yield Strength Part II. Pipeline Research Council International, Inc. (PRCI), 1994. http://dx.doi.org/10.55274/r0010121.

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Fitness for purpose girth defect assessments assume the presence of a single defect. This assumption is not always fulfilled. Welds may contain many small defects. These defects, when considered individually and without interaction, are generally innocuous. However, this may be a false conclusion as to the true strength or deformation capacity of the weld because neighbouring imperfections or defects may interact and may be more severe than each individual imperfection. When non-destructive examinations reveal multiple defects, a defect recategorisation procedure has to be applied to determine
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2

Zhu, Xian-Kui, Tom McGaughy, and Brian Leis. PR-185-163609-R01 Model Error Assessment for Pipeline Metal-loss Defects Phase II. Pipeline Research Council International, Inc. (PRCI), 2018. http://dx.doi.org/10.55274/r0011506.

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This project included seven, full-scale burst tests conducted on a single grade and size of pipe to evaluate a metal-loss defect assessment model developed under EWI Project No. 54922CSP, "Assessment of Corrosion Model Error for Metal Loss Defects in Pipelines" (PRCI Project EC-2-6). The goal of the modeling and full-scale test efforts was to minimize error and reduce the conservatism of Level-1 corrosion assessment models, with the eventual benefit of potentially reducing unwarranted maintenance efforts without increasing operator risk. Seven tests were performed on a recent vintage of API 5L
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Denys. L51685 Effect of Weld Metal Matching on Girth Weld Performance Volume II-Experimental Investigation. Pipeline Research Council International, Inc. (PRCI), 1993. http://dx.doi.org/10.55274/r0010111.

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This is the second volume of a three-volume study (see also L51651 and L51711). The integrity of girth weld defects in gas transmission pipelines is ensured by non-destructive inspection procedures. The acceptance level of pipe line girth weld defects revealed by non-destructive testing is commonly based on workmanship quality control. Unfortunately, workmanship defect acceptance levels are based on experience and are, by necessity, both arbitrary and often conservative. This report presents the results of an experimental study of the failure behavior of 11.6 mm (0.457 in.) pipe segments taken
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Bala. L51600 Engineering Critical Assessment of Girth Welds in Small Diameter Pipe. Pipeline Research Council International, Inc. (PRCI), 1989. http://dx.doi.org/10.55274/r0010101.

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Transmission pipeline girth welds are fabricated and inspected to rigorous material standards such as API 1104, CSA Z 184 and BSI 4515. These standards contain weld defect acceptance levels based on good workmanship criteria and have been arrived at on the basis of traditional welding and inspection practices. In certain instances, defects that do not meet the workmanship standards have been accepted on the basis of an engineering critical assessment (ECA) using the British Standard PD 6493 assessment technique. The use of ECA is now being incorporated into the pipeline codes. Four girth welds
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Ruschau. L51771 Alternative Acceptance Criteria of Girth Weld Defects. Pipeline Research Council International, Inc. (PRCI), 1997. http://dx.doi.org/10.55274/r0010187.

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The girth weld defect acceptance standards based on good workmanship reflect quality levels that can be reasonably expected from a qualified welder. Workmanship (WM) or weld quality standards specify a maximum allowable length whilst the percentage loss of cross-sectional area is used for porosities. This approach to defect acceptance philosophy has arisen from the use of radiography as the NDE technique for detecting and quantifyingweld discontinuities. The first WM standard for inspection and acceptance of finished girth welds was implemented by API in 1953. The specific requirements of the
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Chauhan. L52134 Development of Methods For Assessing Corrosion Metal Loss Defects In Casing Strings. Pipeline Research Council International, Inc. (PRCI), 2003. http://dx.doi.org/10.55274/r0010892.

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An industry survey, dominated by PRCI member companies, was undertaken to gather key information regarding the design, operation and inspection of well bore casing strings. The aim of the survey was to gather information regarding the design standards, fields, gas composition, completion configuration, operational details, inspection methods and type of damage found. Survey results representing 67 storage facilities with a total of 4724 wells were received. This represents approximately 16% of US gas storage facilities. Facilities with initial completion dates between 1920 and 1990 were repres
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7

Zhu, Xian-Kui, Brian Leis, and Tom McGaughy. PR-185-173600-R01 Reference Stress for Metal-loss Assessment of Pipelines. Pipeline Research Council International, Inc. (PRCI), 2018. http://dx.doi.org/10.55274/r0011516.

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This project focused on quantifying the reference stress to be used in predictive models for assessing the effects of metal loss on pipeline integrity. The results of this project will work in concert with the outcomes of project EC-2-7 that examined sources of scatter in metal-loss predictions with respect to the metal-loss defect geometry. The methodology for developing a new reference stress included empirical and finite element analyses along with comparison of full-scale experimental results that indicate the failure behavior of defect-free pipe has dependence on the strain hardening rate
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8

Wagoner, Robert. Internal defect stresses: key to material scale effects and mechanical behavior. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1969467.

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9

Diaz de la Rubia, T., N. Soneda, and Y. Shimomura. Atomic scale modeling of defect production and microstructure evolution in irradiated metals. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/543299.

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10

Denowh, Chantz, Chris Alexander, and Ahmed Hassanin. PR-652-195104-R02 Development of Heavy Wall ILI Test Samples. Pipeline Research Council International, Inc. (PRCI), 2021. http://dx.doi.org/10.55274/r0012096.

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Guidance is needed for the pipeline industry's in-line inspection (ILI) technologies as current industry practices address mainly thin-wall pipe specifications as well as spool and defect design. Heavy-wall pipe is mostly found in subsea applications where the predominant threats are internal; however, external defects cannot be discounted. Nondestructive evaluation (NDE) sensing technologies for heavy-wall pipe often have very different specifications for examining external versus internal defects. The end uses for ILI technologies in the heavy-wall subsea applications often put a premium on
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