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Im going to throw in the trick answer: change the shape of the part in question to improve the fatigue and strength properties of the material in question.
Answer 2
Yes. Fatigue requires repeated cycles of loading. If you design a part with low strength but only has a few load cycles throughout the life of the part, then it will never fatigue.
There are several application of Bolts that have low fatigue loading cycles. The screws attaching the interior of your car are low strength and they last forever---because there is very little load cycles applied to it.
Another example: Wooden chair legs never break under fatigue. I wouldn't say that they are high strength part.
What else can I help you with?
What is fatigue strength?
Fatigue life is the number of cycles a structure part can take before it breaks. A cycle is when the stress reverses or changes about its mean value as happens during vibration for example. Usually fatigue life is expressed in number of cycles; for example a steel part of a given strength may have its strength reduced in half after 1,000,000 cycles due to fatigue.
What is Effect of corrosion on fatigue life?
Yes it will bring down the fatigue life and the material will not endure at any point. Degrading nature of fatigue loading on the materials is compounded by the corrosion interaction. Synergistic damage - The damage will be more than the addition of damages due to corrosion and fatigue loading. The formation of intrusion and extrusion due to fatigue loading leads to the notches. The corrosion media will enter the notches and forms oxide with the base metal and it will be passive to further corrosion. But the fatigue loading will disturb the passive layer and facilitate the media to corrode the fresh material. Hence it will drastically decrease the fatigue life of the material.
How Surface finish vs fatigue life of components?
The fatigue life of metals and some plastics too, can be affected by their surface finishes. Fatigue nearly always starts as a surface crack which spreads across the cross-section of the material and weakens it until it is unable to carry the load and it fails either by direct tension of shear stress on the uncracked remnant of the original cross-section. The surface finish of the material contributes adversly to the initiatian period before a crack starts, and when the surface is rough a stress concentration is present there. When there is no roughness present the crystaline nature of the material itself may be the cause of the crack starting. But when the surface is rough this process is faster due to having greater local stresses. So with increasingly rougher surfaces the fatigue life becomes progressively shorter. Depending on the spectrum of applied loads, this very local stress is responsible for the initiation of the crack which spreads with time. In sheet metal the spread is slow but in heavy solid pieces of metal, the speed of the crack is much faster so the start and finishing times are not very different.
Explain Heat Treatment process and its purposes?
Heat treatment process hardens the metal, after tempering In fact heat treatment is very similar to cooking!! Why you cook? to make sth you want! to make sth better.more delicious and .. . you are doing this process to make the thing you want.for example you want Fe in perlite with special hardness and other mechanical features.so you do heat treatment in a way you want and in pattern that you make.very simple but you must expert!
What are the negative and positive effect of a high level technology?
ative effects of high level technology in family life
What is fatigue strength?
Fatigue life is the number of cycles a structure part can take before it breaks. A cycle is when the stress reverses or changes about its mean value as happens during vibration for example. Usually fatigue life is expressed in number of cycles; for example a steel part of a given strength may have its strength reduced in half after 1,000,000 cycles due to fatigue.
What has the author Waloddi Weibull written?
Waloddi Weibull has written: 'The static strength and the fatigue strength of riveted, spotwelded and redux-bonded joints in 24 ST aluminium alloy sheet' 'A new method for the statistical treatment of fatigue data' 'Scatter of fatigue life and fatigue strength in aircraft structural materials and parts' 'Scatter in fatigue life of 24S-T alclad specimens with drilled holes'
What is Effect of corrosion on fatigue life?
Yes it will bring down the fatigue life and the material will not endure at any point. Degrading nature of fatigue loading on the materials is compounded by the corrosion interaction. Synergistic damage - The damage will be more than the addition of damages due to corrosion and fatigue loading. The formation of intrusion and extrusion due to fatigue loading leads to the notches. The corrosion media will enter the notches and forms oxide with the base metal and it will be passive to further corrosion. But the fatigue loading will disturb the passive layer and facilitate the media to corrode the fresh material. Hence it will drastically decrease the fatigue life of the material.
Strengths a person should have in life?
There are many strength an individual should have in their life. An individual should have moral strength, strength in their various relationships, confidence in themselves, high self-esteem, and strength in their personal moral beliefs.
What is soderberg equation?
The Soderberg equation is a criterion used to predict the fatigue life of materials under varying stress conditions, particularly in the context of engineering and design. It relates the equivalent alternating stress and the mean stress to a material's yield strength, helping engineers evaluate the safety and reliability of components subjected to cyclic loading. The equation incorporates factors such as the material's endurance limit and the effects of mean stress, making it valuable for assessing fatigue failure in structures and machinery.
What is the different between fatigue and creep?
Both Fatigue and Creep are causes of failure of a material at a stress value significantly below the Allowable threshold. They differ from each other in the sense that fatigue is defined as the failure of a material, subjected to multiple loading and unloading cycles, even though, in none of the instances, the applied stress crosses the Allowable stress value. The fatigue life of a material is usually specified in # of loading/unloading cycles it can undergo, without failing. The fatigue life decreases as the applied stress approaches the Allowable Stress. CREEP, on the other hand, is time related failure of a material. Creep, explains that a material subjected to a certain applied stress will continue to deform at that constant stress value. Hence, creep results in an increase in strain value while the stress is constant, until it causes the failure of the subject material. CREEP tends to increase with the temperature of the specimen
What is a goodman diagram?
Convenient graphical representation of various combinations of mean and alternating stress in relation to criteria both for yielding and for various fatigue lives. Horizontal axis correspond to mean stress. When y=0 it means static loading. Yield and ultimate strength are plotted in x-axis. Vertical axis corresponds to alternating load. When x=0 it means fully reversible
What has the author Paul Anthony Bartolotta written?
Paul Anthony Bartolotta has written: 'Fatigue life prediction of an intermetallic matrix composite at elevated temperatures' -- subject(s): Fatigue life, Metal fatigue, Thermal fatigue, Metal matrix composites
How can i live life without getting high?
Keep yourself busy. Will power and strength will help as well.
Why carbon brushes are used in motor.type of brushes.and why specifically carbon brushes are usedwhy other type are not used most?
Low resistivity to current , high hardness and material strength gives long brush life under severe operating conditions
How do you conduct fatigue test?
To conduct a fatigue test, first, prepare the test specimen according to relevant standards, ensuring it has the desired dimensions and surface finish. Next, set up a testing machine that applies cyclic loading to the specimen, specifying the load levels, frequency, and number of cycles to simulate real-world conditions. Monitor the specimen for signs of fatigue, such as cracks or failure, and record data throughout the test to analyze material behavior under repeated stress. Finally, evaluate the results to determine the material's fatigue life and its performance limits.
What arethe advantages and disadvantages of shape memory alloys?
Advantages of shape memory alloys include their ability to return to a predetermined shape when heated, high strength-to-weight ratio, and the ability to undergo a large amount of deformation. Disadvantages may include high cost, limited fatigue life, and sensitivity to temperature variation.
