Fatigue Crack Propagation Basically‚ fatigue crack propagation can be divided into three stages: stage I (short cracks)‚ stage II (long cracks) and stage III (final fracture). • Stage I: Once initiated‚ a fatigue crack propagates along high shear stress planes (45 degrees)‚ as schematically represented in Fig. 1. This is known as stage I or the short crack growth propagation stage. The crack propagates until it is decelerated by a microstructural barrier such as a grain boundary‚ inclusions‚
Premium Fatigue Materials science
Load-limited design – wire ropes Wire ropes function as a tie. Hence the constraint is to withstand a certain tensile stress before failing by fracture. σ_f=(CK_1c)/√(πa_c ) If the objective to maximize the allowable stress‚ then‚ the material indices is simply M=K_1c CES (Cambridge Engineering Selector) is utilized to plot a diagram of fracture toughness vs. Young’s modulus. In this plot‚ only material with K1c >15MPam0.5 are considered. The same plot is used to solve part b) and c)
Premium Force Spring Classical mechanics
Right intertrochanteric femoral fracture Postoperative Diagnosis: Right intertrochanteric femoral fracture OPERATIVE PROCEDURE: Open reduction‚ internal fixation of right intertrochanteric femoral fracture with DePuy sliding screw. ANASTHESIA: General Endotracheal. INDICATIONS: The patient is a 69 year old black female who fell‚ landing on her right hip. She was seen in the emergency room where physical exam and x-ray revealed an intertrochanteric right femoral fracture. She was admitted to Dr. Loyd’s
Premium Hip fracture Medical history Screw
A. Major Injuries Reportable major injuries are: fracture other than to fingers‚ thumbs or toes; amputation; dislocation of the shoulder‚ hip‚ knee or spine; loss of sight (temporary or permanent); chemical or hot metal burn to the eye or any penetrating injury to the eye; injury resulting from an electric shock or electrical burn leading to unconsciousness or requiring resuscitation or admittance to hospital for more than 24 hours; any other injury: leading to hypothermia‚ heat-induced
Premium Violence Bone fracture Rape
Joules/Fracture Surface‚ J/m² | 1 | 11.16 | 3.27 | 0.110 | 3014.26 | 2 | 11.17 | 3.28 | 0.116 | 3166.15 | 3 | 11.17 | 3.27 | 0.107 | 2929.43 | High Impact Polystyrene (HIPS) No. | Width(A)‚ mm | Thickness(W)‚ mm | Energy‚ J | Joules/Fracture Surface‚ J/m² | 1 | 11.06 | 3.28 | 0.295 | 8131.92 | 2 | 10.89 | 3.25 | 0.251 | 7091.90 | 3 | 11.05 | 3.29 | 0.281 | 7729.44 | High Density Polyethylene (HDPE) No. | Width(A)‚ mm | Thickness(W)‚ mm | Energy‚ J | Joules/Fracture Surface
Premium Polymer Materials science Pendulum
Simple Pelvic Fracture‚ Adult A pelvic fracture is a break in one of the pelvic bones. The pelvic bones include the bones that you sit on and the bones that make up the lower part of your spine. A pelvic fracture is called "simple" if the broken bone does not move out of place. CAUSES A pelvic fracture can be caused by: A fall. A car accident. Force or pressure applied to the pelvis. RISK FACTORS You are at increased risk of fracturing your pelvis if: You are a teen who plays
Premium
paramedics. On examination‚ his right femur appeared to be fractured. X-ray studies confirmed an oblique‚ compound fracture which fortunately did not injure the femoral artery. However‚ there is a possibility of soft tissue damage in the area of the fracture. After routine blood work results showed that Mr. Michaels could tolerate surgery‚ he was taken to surgery for an open reduction. The fracture was secured with a plate and screws. A myorrhaphy was also necessary. The patient was taken to the recovery
Premium Muscular system Muscle Heart
Osteoporosis is a bone disease in which the bones become very brittle and weak. Even a little cough could fracture your bone. Causes: when you’re in your younger ages you constantly make new bone how much you store when you reach your peak can determine whether or not you develop osteoporosis. Risk factors of this disease are: • Your Sex‚ in which women are most likely to get it than men. • Your age‚ as you get older your body stops making “new bone”‚ so you will have a greater chance in getting
Premium Osteoporosis Bone Vitamin D
Child bone fracture From Wikipedia‚ the free encyclopedia A child bone fracture is a medical condition in which a bone of a child (a person younger than the age of 18) is cracked or broken.[1]About 15% of all injuries in children are fracture injuries.[2] Bone fractures in children are different than adult bone fractures because a child’s bones are still growing. Also‚ more consideration needs to be taken when a child fractures a bone since it will affect the child in his or her growth[3] How
Premium Bone fracture
Case Study #35Case Study #35Scenario S.P. is admitted to the orthopedic ward. She has fallen at home and she has sustained an intracapsular fracture of the hip at the femoral neck. The following history is obtained from her: She is a 75-year-old widow with three children living nearby. Her father died of cancer at age 62; mother died of heart failure at age 79. Her height is 5’3 and weighs 118 pounds. She has a 50 pack year smoking history and denies alcohol use. She has severe Rheumatoid Arthritis
Premium Osteoporosis Hip replacement Hip