Determination of the optimum loading path (internal pressure- axial feeding) to restrict the Bursting, buckling and wrinkling through tube hydroforming process is necessary to produce an acceptable tube. In this paper, the wrinkling and fracture criteria are implemented to an finite element code devoted to the simulation of tube hydroforming processes. Using the ANSYS parametric design language...

In the aerospace industry, fracture requirements are usually expressed in a document titled "Fracture Control Implementation Plan (FCIP)." The plan specifies the fracture control criteria and procedures to be implemented on a specific program. The primary objective of these controls is to preclude flaw-induced structural failures that could imperil a mission or a Space Transportation System and...

PURPOSE The risks and benefits of continuing bisphosphonate therapy beyond 5 years in patients with primary osteoporosis have not been well established. METHODS We searched MedLine, EMBase, CENTRAL, CINAHL, and AgeLine prior to February 2010. Bibliographies were also searched and experts in the field contacted. The ProQuest Dissertations and Theses database and relevant conference proceedings...

Methods: A retrospective cohort study was conducted in three tertiary referral centers in the Netherlands. Patient records were reviewed for patients who met the selection criteria (i.e. age ≥55 years, type II/III odontoid fractures). Fracture healing (union/stability) and clinical outcome (Likert scale) were assessed. The influence of age, applied treatment, and treatment strategy (‘fracture b...

background supracondylar fracture of the humerus is the most common elbow injury that requires reduction and immobilization in the proper position to :union:. there are a few reports regarding the position of the forearm immobilization on elbow cosmetic outcome. objectives this study aimed to compare two modes of the forearm, supination and pronation in elbow deformity incidence after closed re...

Background: There is inconsistent information about the role of psychological factors in the incidence of reflex sympathetic dystrophy (RSD) in patients with distal radius fractures. The present study was thus undertaken to evaluate the relationship between some of these factors and the occurrence of reflex sympathetic dystrophy in patients with distal radius fracture. Methods: One hundred and ...

BACKGROUND We compared the union and functional results of intramedullary nailing and open reduction internal fixation treatment applied to adults with a forearm diaphysis fracture (fracture of the radius and/or ulna). METHODS We retrospectively examined 90 patients with completed skeletal maturation who were surgically treated for a forearm diaphyseal fracture. Patients with a Monteggia Gale...

BACKGROUND Estimations of the risk of bisphosphonate associated atypical femoral fractures vary between different population-based studies, from considerable to neglectable. A possible explanation for these discrepancies could be different definitions of atypical fractures. We aimed to identify specific radiographic fracture characteristics associated with bisphosphonate use. METHODS In a pre...

The concept of brittleness plays a crucial role in the development of tight oil and gas as it reflects a rock’s ability to fail and maintain a fracture in a hydraulic fracture experiment. Conventional methods that attempt to quantify the degree of brittleness associated with a rock mass have a few shortcomings. For example, failure criteria are not used and only the effective moduli are conside...

background : in anterior endodontically treated teeth a better esthetic can be achieved by using all-ceramic post -core restorations instead of metal post systems. maximum retention and fracture resistance of the post are the criteria upon which selection of a post system is based. the aim of this study was to evaluate the fracture resistance and retention of two all-ceramic post and core syste...