Bending Moment Lab Report Essay Example

Bending Moment Lab Report Paper Moments are calculated by using static theory, or multiplying perpendicularly directed load by the respective distance to the pivot point. 1. 2 Objective The main objective of that laboratory is to provide students with basic experience and thus, the comparison between calculated and measured values (software) should be demonstrated to show the ability to apply static theory from applied mechanics module. 1. 3 Theory Shear forces The shearing force at any section of a beam is the algebraic sum of the lateral components of the forces acting on either side of the section. F is the resultant action on the left of AAA. As the beam is in equilibrium then resultant reaction on the right of AAA must be downwards. Figurer. Shear forces diagram Equilibrium state fix=ON; iffy=ON; IMO=ON. M In our case we use AAA as a reference point to calculate the bending moment Bending Moment Bending Moment at AAA is defined as the algebraic sum of the moments about the section of all forces acting on either side of the section. Bending moment is considered to be positive when the total moment on the right of AAA is clockwise, whereas moment to the right of AAA is anticlockwise. We will write a custom essay sample on Bending Moment Lab Report specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Bending Moment Lab Report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Bending Moment Lab Report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer That type of behavior of ending moment is called sagging since it makes the beam to become concave upward. The opposite of sagging is called hogging. Figure 2. Bending moment (sagging) diagram 2. Experimental apparatus The provided technical equipment is a very functional device that enables students to perform laboratory sessions for mechanical, civil and structural engineering students. It help students to learn more and create a clear visualization and straightforward proof of the bending moment theory in a beam. Experiments include the ability to place the load at any point on the load line o measure the bending moment. The whole apparatus consists of hardware (device itself) and software (program for determining bending moment) Software Software of the STAR is a program that enables computer to perform various tasks as with loads on the line as by virtual visualization. The computer simulation implies the usage of software without teaching hardware equipment. To put it simply, experiments could be actually conducted without the apparatus. Figure 3. Bending moment hardware apparatus Hardware The high quality bending moment device consist of two parallel beams which eave a cut position that acts like a pivot. To accomplish bending moment in a beam experiment students apply loads along the beam. The moment arm bridges the cut onto the load cell thus calculating the reacting and measuring the bending moment force. Students are then able to see the force resultant on the digital display. Additionally, weighs, weighs hangers as well as student and teacher laboratory manuals are included. 3. Experiment Figure 4. Loads and reaction forces diagram In the first part of experiment conducted only one load of 3 available different dads were applied at the distance of mm from the left corner of beam (0-PI).

History of the Black Box aka Flight Data Recorder

History of the Black Box aka Flight Data Recorder David Warren had a deeply personal reason to invent the  flight-data recorder (commonly referred to as the â€Å"black box†). In 1934, his father died in one of Australia’s earliest air crashes.   Early Life and Career David Warren was born in 1925 on Groote Eylandt, and island off the Northern coast of Australia. Gadgets and devices, like the ham radio left to him by his father, helped Warren through his childhood and adolescence. His educational record speaks for itself: he graduated with honors from the University of Sydney before earning a diploma in education from the University of Melbourne and a Ph.D. in chemistry from Imperial College London. In the 1950s, as Warren was working for the Aeronautical Research Laboratories in Melbourne, a few developments occurred to reignite his instincts regarding in-flight recordings. In Britain in 1949, the de Havilland Comet was introduced- only to experience a disaster in 1954 with a series of high-profile crashes. Without any kind of recording device from inside the aircraft, determining the causes and investigating the intricacies of these disasters was a famously difficult task for the British authorities. Prime Minister Winston Churchill himself was quoted as saying, â€Å"The cost of solving the Comet mystery must be reckoned neither in money nor in manpower.† Around the same time, the earliest tape recorders were being introduced in trade shows and storefront windows. It was a German-made one that first caught Warren’s eye, leading him to wonder how much more information the authorities would have during its investigations if a device like this had been in the Comet . Inventing the "Memory Unit" In 1957, Warren completed a prototype- which he termed the â€Å"Memory Unit†- for his device. His idea, however, was greeted with no shortage of criticism from the Australian authorities. The Royal Australian Air Force haughtily suggested that the device would capture â€Å"more expletives than explanations,† while the Australian pilots themselves worried about the potential for spying and surveillance. It took the British- the maker of the tarnished Comet- to appreciate the necessity of Warren’s device. From there, flight-data recorders proceeded to become standard procedure not only in Britain and Australia but also in America and in the commercial flying industry all across the world. There seems to be some dispute as to how Warren’s device came to be known as the black box, considering that the color of Warren’s prototype was closer to red or orange, in order to make the device stand out amidst the wreckage of a crash. However, the black-box moniker has stuck, perhaps owing to the intense steel casing required to protect the box. Warren has never received financial reward for his invention, although he has- after what was initially quite a battle- been officially recognized by his own country: in 2002, he was awarded the Order of Australia for his contributions. Warren died in 2010, at the age of 85, but his invention continues to be a mainstay on aircraft worldwide, recording both cockpit chatter and instrument readings of altitude, speed, direction, and other statistics. Additionally, car manufacturers have recently started installing black boxes in their vehicles, adding another chapter in the evolution of Warren’s originally maligned idea.

Love between Fathers and children Essay Example | Topics and Well Written Essays - 500 words

Love between Fathers and children - Essay Example The first similarity is that the two poems have the dad as the main subject. In â€Å"Those Winter Sundays†, the poet states that â€Å"Sundays too My Father got up early/ and put his clothes on in the blueback cold† (1, 2). This line introduces the theme of the poem. In the entire poem, the poet continues to depict the figure and their role in the family setting. â€Å"My Papa’s Waltz† was the poet also introduces the father figure, â€Å"†¦the whisky on your breath/could make a small boy dizzy†¦Ã¢â‚¬  (1, 2). In this line, the narrator describes the habitual trait of their father. The same is emulated across the entire poem. The second similarity is that the two poems also depict the responsibility of the father in the family. In â€Å"My Papa’s Waltz† the poet asserts that, â€Å"we romped until the pans/ slid from the kitchen shelf† (4, 5). This line introduced the role of the dad depicted in the poem. In addition, the poem also displayed an exceptional responsibility of the father in the poem. In the poem â€Å"Those Winter Sundays† the poet states that, â€Å"who had driven out the cold/and polished my good shoes as well† (11, 12). This line depicts the father’s responsibility in the family setting. In addition, the narrator appreciates and recognizes the efforts of their father. The major difference in the two poems is that the perception of the father figure is represented differently. In â€Å"My Papa’s, Waltz† the narrator is appreciative of the role of the father. The narrator states that, â€Å"†¦then waltzed me off to bed/ still clinging to your shirt†¦Ã¢â‚¬  (15, 16). The narrator appreciated the efforts put by their father to make their night confortable. However ¸ in â€Å"Those Winter Days†, the narrator is fearful of their father; fearing the chronic angers of that house. In the poem, the narrator describes their father as one to be feared for their personality. In addition, the narrator includes