Особенности повреждаемости металла сварных соединений трубопроводов
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Дата
2019
Автори
ORCID
DOI
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
Национальный технический университет "Харьковский политехнический институт"
Анотація
В работе на основании проведенной оценки технологических, конструкционных и эксплуатационных факторов, которые влияют на надежность сварных соединений трубопроводов, на виды и скорость развития возникающих в них дефектов, было установлено, что для оценки надежности соединений трубопроводов после длительной эксплуатации недостаточно проведения стандартных исследований
механических свойств сварных швов. Предложено в качестве критерия оценки надежности сварных соединений трубопроводов использовать такую характеристику дефектов, как их сопротивление разрушениям.
The aim of the work is to establish the causes of defects in welded joints of pipelines and factors affecting the size and speed of their development. In the work, an assessment was made of the technological, structural and operational factors affecting the reliability of welded joints of pipelines, the types and speed of development of defects arising in them. It was found that to assess the reliability of pipeline connections after long-term operation, it is not enough to conduct standard studies of the mechanical properties of welds. It is proposed to use such a characteristic of defects as fracture resistance as a criterion for assessing the reliability of welded joints in pipelines. It was established that the damageability of the welded joints of pipelines and the assessment of their defects, in general, depends on the joint manifestation of technological, structural and operational factors. The presented research results make it possible to conclude that to evaluate the reliability of welded joints of pipelines after long-term operation, it is not enough to conduct standard studies of mechanical properties. Criteria for assessing the reliability of pipelines should be the characteristics of defects or the value of resistance to fracture of welded joints.
The aim of the work is to establish the causes of defects in welded joints of pipelines and factors affecting the size and speed of their development. In the work, an assessment was made of the technological, structural and operational factors affecting the reliability of welded joints of pipelines, the types and speed of development of defects arising in them. It was found that to assess the reliability of pipeline connections after long-term operation, it is not enough to conduct standard studies of the mechanical properties of welds. It is proposed to use such a characteristic of defects as fracture resistance as a criterion for assessing the reliability of welded joints in pipelines. It was established that the damageability of the welded joints of pipelines and the assessment of their defects, in general, depends on the joint manifestation of technological, structural and operational factors. The presented research results make it possible to conclude that to evaluate the reliability of welded joints of pipelines after long-term operation, it is not enough to conduct standard studies of mechanical properties. Criteria for assessing the reliability of pipelines should be the characteristics of defects or the value of resistance to fracture of welded joints.
Опис
Ключові слова
дефекты, надежность, сопротивление, defects, reliability, resistance
Бібліографічний опис
Касьяненко И. В. Особенности повреждаемости металла сварных соединений трубопроводов / И. В. Касьяненко // Вісник Національного технічного університету "ХПІ". Сер. : Інноваційні технології та обладнання обробки матеріалів у машинобудуванні та металургії = Innovative technologies and equipment handling materials in mechanical engineering and metallurgy: зб. наук. пр. – Харків : НТУ "ХПІ", 2019. – № 11 (1336). – С. 22-26.