• Proceedings of the Korean Society of Propulsion Engineers Conference
• /
• 2011.11a
• /
• pp.481-487
• /
• 2011

This paper provides a comparison between finite element analysis results and test data of rupture disc. Rupture disc is safety device of high pressure equipment. Rupture disc of solid rocket motor is a device to control rupture pressure. Rupture discs were made of AISI 316L. By the elastic-plastic analysis, the stress limit of rupture discs were compared to the test results. The results can be used to control the rupture pressure by the change of the disc size.

• Clinical and Experimental Pediatrics
• /
• v.55 no.5
• /
• pp.181-184
• /
• 2012

Voiding cystourethrography (VCUG) is a commonly performed diagnostic procedure for the evaluation of vesicoureteral reflux with urinary tract infection or congenital renal diseases in children. The procedure is relatively simple and cost-effective, and complications are very rare. The iatrogenic complication of VCUG range from discomfort, urinary tract infection to bacteremia, as well as bladder rupture. Bladder rupture is a rare complication of VCUG, and only a few cases were reported. Bladder rupture among healthy children during VCUG is an especially uncommon event. Bladder rupture associated with VCUG is usually more common in chronically unused bladders like chronic renal failure. Presented is a case of bladder rupture that occurred during a VCUG in a healthy 9-month-old infant, due to instilled action of dye by high pressure. This injury completely healed after 7 days of operation, and it was confirmed with a postoperative cystography. The patient's bladder volume, underlying disease, velocity of the contrast media instilled, catheter size, and styles of instillation are important factors to prevent bladder rupture during VCUG. Management of bladder rupture should be individualized, but the majority of infants are treated with the operation. In conclusion, bladder rupture is a rare complication, however, delicate attention is needed in order to prevent more dire situations.

• Journal of Chest Surgery
• /
• v.24 no.5
• /
• pp.480-484
• /
• 1991

Traumatic rupture of the main bronchus is comparatively very rare. With the advent of widespread mechanization and high-speed era, the incidence of traumatic rupture of the tracheobronchial tree has been increased considerably. Rupture of the bronchus is an unusual result of nonpenetrating trauma to the chest. Early recognition of bronchial rupture and emergency thoracotomy and management is essential for reducing of morbidity, mortality and late complications. We experienced 3 cases of bronchial rupture caused by nonpenetrating chest trauma with or without rib fracture. Patients were suffered from dyspnea and chest pain. After closed thoracostomy, corrective surgery was performed. Postoperative courses were uneventful and discharged without any complication.

• Transactions of the Korean Society of Mechanical Engineers
• /
• v.19 no.5
• /
• pp.1182-1189
• /
• 1995

Several methods have been developed to predict the creep rupture time of the steam pipes in thermal power plant. However, existing creep life prediction methods give very conservative value at operating stress of power plant and creep rupture strain cannot be well estimated. Therefore, in this study, creep rupture time and strain prediction method accounting for material damage and grain boundary sliding is newly proposed and compared with the existing experimental data. The creep damage evolves by continuous cavity nucleation and constrained cavity growth. The results showed good correlation between the theoretically predicted creep rupture time and the experimental data. And creep rupture strain may be well estimated by using the proposed method.

• Journal of Chest Surgery
• /
• v.33 no.10
• /
• pp.834-838
• /
• 2000

Left ventricular free wall rupture following acute myocardial infarction (AMI) is the second most common cause of death and has been reported to be responsible for 4 to 24% of all infarction deaths. The rupture occurs anywhere from a few hours to several days after AMI. The common findings of ventricular rupture are persistent chest pain bradycardia and shock. This may be often mistaken for the ruptured dissection of the ascending aorta. The different points from dissection are 1) persistent chest pain 2)persistent ST segment elevation and 3) only intramural hematoma in ascending aorta. We have sucessfully managed two patients with postinfarction myocardial rupture. Surgical management consisted of infarctectomy repairi of the ventricular rupture and coronay artery bypass grafting. We conclude that successful surgical management of ventricular free wall rupture should require prompt diagnosis and emergency operation.

• Journal of Korean Foot and Ankle Society
• /
• v.23 no.3
• /
• pp.83-90
• /
• 2019

Achilles tendon rupture is a common sports injury encountered in younger populations. Various treatment methods are used for acute and chronic rupture. Several treatments for each condition are available, each having their advantages and disadvantages. In an acute rupture, surgical treatment may be a priority for younger patients or those wishing a quick return to play, but the long-term functional outcome is similar to non-surgical treatment. In addition, the re-rupture rate shows a slight difference between the two treatments. The clinical outcomes are similar regardless of the surgical treatment, but an accelerated rehabilitation program should be accompanied by good results. In chronic and neglected rupture, surgical treatment is preferred over non-surgical treatment. Treatments are chosen based on the size of the tendon defect. This article reviews the current updates in the treatment of Achilles tendon rupture that will help clinicians choose the appropriate treatment.

• Journal of Chest Surgery
• /
• v.24 no.10
• /
• pp.987-992
• /
• 1991

Severe cardiac injury due to nonpenetrating blunt chest trauma is not uncommon, but survival to reach the hospital is rare. Successful management of fatal cardiac rupture depends on the high suspicion and on the prompt exploration. In the patient presented, the interatrial septal rupture was found associated with the right atrial rupture and the patient was successfully treated under the cardiopulmonary bypass. Although many types of cardiac rupture cases survived have been reported in the literature, we have been unable to find the interatrial septal rupture case like us. We would therefore like to report our experience with surgical repair of nonpenetrating rupture of right atrium and interatrial septum.

• Journal of Chest Surgery
• /
• v.5 no.1
• /
• pp.57-60
• /
• 1972

Esopkageal rupture is one of the rarest disease. Mackler described that esophageal rupture was differentiated from esophageal perforation, the perforation is produced by esophagoscopy, and continuous erosion, such as esophagitis,gastric reflux, hiatal hernia and malignant neoplasm of the esophagus, the rupture is occurred by severe vomiting, cough and strong positive pressure into the esophageal lumen. Since,at first Boerhaave reported the esophageal rupture due to severe vomiting in 1742, several case reports of esophageal rupture have been in the literatures. Authors reported a case of the esophageal rupture due to explosion of gasoline in 50 year old female. The rupture occurred a longitudinal rent on the left posterolateral aspect of lower one third of esophagus and accompanied wlth second degree burn on the entire face and neck. The treatment consists of immediate thoracotomy in order to drainage of pyothorax and gastrostomy for nutritional problem, but patient expired because of septicemia probably due to uncontrollable empyema of thorax on 45th admitted day.

• Journal of the Korean Wood Science and Technology
• /
• v.36 no.1
• /
• pp.61-68
• /
• 2008

The effect of rupture on the speed of ultrasonic wave was investigated with the PUNDIT and the effective detecting method of defects, moving transmitter and receiver. The speed of ultrasonic wave according to the course of rupture was not affected by transmitter and receiver and in the course of parallel rupture, but only in the course of vertical rupture. When rupture was not located on the ultrasonic wave progressing course, rupture was not detected. However, if rupture was formed perpendicularly to the ultrasonic wave progressing course but located on the ultrasonic wave progressing direction, rupture can be detected. Also, the rupture can be detected, when one transmitter and receiver was placed at top and the other at bottom. After detecting rupture in a part, rupture was determined accurately, placing and moving two transmitters and receivers at width.

• The Journal of Korean Medicine
• /
• v.22 no.1
• /
• pp.104-110
• /
• 2001

Muscle rupture is not a common disease. But it is known that partial muscle rupture commonly occurs to active sports athletes or heavy workers who receive severe physical stress. Gastrocnemius muscle rupture(this is called ‘tennis leg’)is often caused by sudden overstretching of the muscle through concomitant ankle dorsiflexion and knee extension. This rupture may result in a swelling and pain that is easily confused with other diseases like thrombophlebitis. Ultrasonography can confirm the clinical suspicion of tennis leg and the assessment of the size of the lesion, and can discriminate from other diseases. So it is a useful, noninvasive, low-cost modality to diagnose and follow up tennis leg. We experienced 2 cases of partial gastrocnemius muscle rupture patients who were treated by conservative methods or acupuncture therapy and followed up with Ultrasonography, and arrived at some interesting results, which we report along with a review of some relevant literature.