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Paul C. Paris
Paul Croce Paris (August 7, 1930 - January 15, 2017) was an American academic, engineering consultant and researcher in the field of mechanics and fatigue. He was known particularly for introducing fracture mechanics methods to the aviation industry, and for the empirical Paris' law relating crack growth rate to the amplitude of the stress intensity factor. Career Paris was trained in applied mechanics at Lehigh University. He was a faculty associate at Boeing in the summer of 1955, where he investigated the Comet fatigue (material) failure. His first paper on fracture mechanics was famously rejected by top journals. Paris joined Washington University in St. Louis in 1976. In 2009 he became a professor emeritus and continued to teach. Awards * Honorary Doctorate from Paris Nanterre University * 2003 Crichlow Trust Prize by the American Institute of Aeronautics and Astronautics * 2009 George Irwin Gold Medal by the International Conference on Fracture at Ottawa, Canada * 2016 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris' Law
Paris' law (also known as the Paris–Erdogan equation) is a crack growth equation that gives the rate of growth of a fatigue crack. The stress intensity factor K characterises the load around a crack tip and the rate of crack growth is experimentally shown to be a function of the range of stress intensity \Delta K seen in a loading cycle. The Paris equation is :\begin &= C\left(\Delta K\right)^, \end where a is the crack length and a/N is the fatigue crack growth for a load cycle N. The material coefficients C and m are obtained experimentally and also depend on environment, frequency, temperature and stress ratio. The stress intensity factor range has been found to correlate the rate of crack growth from a variety of different conditions and is the difference between the maximum and minimum stress intensity factors in a load cycle and is defined as : \Delta K= K_-K_. Being a power law relationship between the crack growth rate during cyclic loading and the range of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honorary Doctorate
An honorary degree is an academic degree for which a university (or other degree-awarding institution) has waived all of the usual requirements. It is also known by the Latin phrases ''honoris causa'' ("for the sake of the honour") or ''ad honorem '' ("to the honour"). The degree is typically a doctorate or, less commonly, a master's degree, and may be awarded to someone who has no prior connection with the academic institution or no previous postsecondary education. An example of identifying a recipient of this award is as follows: Doctorate in Business Administration (''Hon. Causa''). The degree is often conferred as a way of honouring a distinguished visitor's contributions to a specific field or to society in general. It is sometimes recommended that such degrees be listed in one's curriculum vitae (CV) as an award, and not in the education section. With regard to the use of this honorific, the policies of institutions of higher education generally ask that recipients ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2017 Deaths
This is a list of deaths of notable people, organised by year. New deaths articles are added to their respective month (e.g., Deaths in ) and then linked here. 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 See also * Lists of deaths by day The following pages, corresponding to the Gregorian calendar, list the historical events, births, deaths, and holidays and observances of the specified day of the year: Footnotes See also * Leap year * List of calendars * List of non-standard ... * Deaths by year {{DEFAULTSORT:deaths by year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1930 Births
Year 193 ( CXCIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sosius and Ericius (or, less frequently, year 946 '' Ab urbe condita''). The denomination 193 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * January 1 – Year of the Five Emperors: The Roman Senate chooses Publius Helvius Pertinax, against his will, to succeed the late Commodus as Emperor. Pertinax is forced to reorganize the handling of finances, which were wrecked under Commodus, to reestablish discipline in the Roman army, and to suspend the food programs established by Trajan, provoking the ire of the Praetorian Guard. * March 28 – Pertinax is assassinated by members of the Praetorian Guard, who storm the imperial palace. The Empire is auctioned o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Structural Integrity Society
The European Society for Structural Integrity (ESIS) is an international non-profit engineering scientific society. Its purpose is to create and expand knowledge about all aspects of structural integrity and the dissemination of that knowledge. The goal is to improve the safety and performance of structures and components. History The purpose of European Structural Integrity Society dates back to November 1978 during the summer school in Darmstadt (Germany). At the time, the name was European Group on Fracture. Between 1979 and 1988 the first technical committees were created, the first technical committee had the designation of Elasto-Plastic Fracture Mechanics. The initial idea was to reproduce in Europe the same as the ASTM committee. The first president of European Structural Integrity Society was Dr. L.H. Larsson (European Commission Joint Research Centre). ESIS has a total of 24 technical committees and national groups in each European country. The current president of ES ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Irwin Gold Medal
George may refer to: People * George (given name) * George (surname) * George (singer), American-Canadian singer George Nozuka, known by the mononym George * George Washington, First President of the United States * George W. Bush, 43rd President of the United States * George H. W. Bush, 41st President of the United States * George V, King of Great Britain, Ireland, the British Dominions and Emperor of India from 1910-1936 * George VI, King of Great Britain, Ireland, the British Dominions and Emperor of India from 1936-1952 * Prince George of Wales * George Papagheorghe also known as Jorge / GEØRGE * George, stage name of Giorgio Moroder * George Harrison, an English musician and singer-songwriter Places South Africa * George, Western Cape ** George Airport United States * George, Iowa * George, Missouri * George, Washington * George County, Mississippi * George Air Force Base, a former U.S. Air Force base located in California Characters * George (Peppa Pig), a 2-year-ol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crichlow Trust Prize
Crichlow or Critchlow is a surname, and may refer to: * Ernest Crichlow (1914–2005), African-American artist * Frank Crichlow (1932–2010), British activist * Herbie Crichlow (born 1968), English music producer and songwriter * Jay Critch (born as Jason Cole Critchlow 1998), American rapper * Kieran Crichlow (born 1981), former Barbadian footballer * Lenora Crichlow (born 1985), British actress * Nathaniel Crichlow Nathaniel “Natty” Elliott Crichlow (12 May 1922 – 18 September 2006) was born in Tunapuna, Trinidad and Tobago, and educated at the Tunapuna Roman Catholic School. He was President of the National Union of Government Employees (NUGE) from 195 ... (1922–2006) * Renn Crichlow (born 1968), Canadian kayaker {{surname, Crichlow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris Nanterre University
Paris Nanterre University (French: ''Université Paris Nanterre''), formerly Paris-X and commonly referred to as Nanterre, is a public research university based in Nanterre, Paris, France. It is one of the most prestigious French universities, mainly in the areas of law, humanities, political science, social and natural sciences and economics. It is one of the thirteen successor universities of the University of Paris. The university is located in the western suburb of Nanterre Nanterre (, ) is the prefecture of the Hauts-de-Seine department in the western suburbs of Paris. It is located some northwest of the centre of Paris. In 2018, the commune had a population of 96,807. The eastern part of Nanterre, bordering t ..., in La Défense area, the business district of Paris. History Nanterre was built in the 1960s on the outskirts of Paris as an extension of the Sorbonne. It was set up as an independent university in December 1970. Based on the Higher education in the Unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington University In St
Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on Washington, D.C. * George Washington George Washington (February 22, 1732, 1799) was an American military officer, statesman, and Founding Father who served as the first president of the United States from 1789 to 1797. Appointed by the Continental Congress as commander of th ... (1732–1799), the first president of the United States Washington may also refer to: Places England * Washington, Tyne and Wear, a town in the City of Sunderland metropolitan borough ** Washington Old Hall, ancestral home of the family of George Washington * Washington, West Sussex, a village and civil parish Greenland * Cape Washington, Greenland * Washington Land Philippines *New Washington, Aklan, a municipality *Washington, a barangay in Catar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanics
Mechanics (from Ancient Greek: μηχανική, ''mēkhanikḗ'', "of machines") is the area of mathematics and physics concerned with the relationships between force, matter, and motion among physical objects. Forces applied to objects result in displacements, or changes of an object's position relative to its environment. Theoretical expositions of this branch of physics has its origins in Ancient Greece, for instance, in the writings of Aristotle and Archimedes (see History of classical mechanics and Timeline of classical mechanics). During the early modern period, scientists such as Galileo, Kepler, Huygens, and Newton laid the foundation for what is now known as classical mechanics. As a branch of classical physics, mechanics deals with bodies that are either at rest or are moving with velocities significantly less than the speed of light. It can also be defined as the physical science that deals with the motion of and forces on bodies not in the quantum realm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fatigue (material)
In materials science, fatigue is the initiation and propagation of cracks in a material due to cyclic loading. Once a fatigue crack has initiated, it grows a small amount with each loading cycle, typically producing striations on some parts of the fracture surface. The crack will continue to grow until it reaches a critical size, which occurs when the stress intensity factor of the crack exceeds the fracture toughness of the material, producing rapid propagation and typically complete fracture of the structure. Fatigue has traditionally been associated with the failure of metal components which led to the term metal fatigue. In the nineteenth century, the sudden failing of metal railway axles was thought to be caused by the metal ''crystallising'' because of the brittle appearance of the fracture surface, but this has since been disproved. Most materials, such as composites, plastics and ceramics, seem to experience some sort of fatigue-related failure. To aid in predicting t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
