Finnie's Notes on Fracture Mechanics
Fundamental and Practical Lessons
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Chapter
Cleavage and Ductile Fracture Mechanisms: The Microstructural Basis of Fracture Toughness
Our preceding discussion has dealt primarily with the macroscopic aspects of fracture with only occasional reference to behavior on the microscopic level. Eventually, it would be desirable to minimize the expe...
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Chapter
The Nature of Fracture
Our objective in this introductory chapter will be to describe the general features of the fracture process and to introduce some of the terminology that will be used. After doing this, we will attempt to trac...
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Chapter
Some Solutions That Are Useful in Fracture Prediction
Our primary objective is to use solutions that have been developed for elastic, elastic–plastic, and fully plastic behavior to predict fracture. The detailed development of these solutions and a discussion of ...
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Chapter
Some Applications of Linear Elastic Fracture Mechanics
The approach to fracture prediction that we discussed in the preceding chapter has been applied to a wide variety of materials in many types of applications. While steels, aluminum alloys, and titanium alloys ...
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Chapter
Stress, Strain, and the Basic Equations of Solid Mechanics
In this chapter our objective will be to review the concepts of stress and strain and to present the equations which relate these quantities, and if necessary other variables, for various types of material beh...
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Chapter
The Basis of Linear Elastic Fracture Mechanics
In this chapter we will discuss the use of elastic solutions to predict the strength of parts containing sharp cracks. Immediately, we are faced with the difficulty that, whether we consider the line crack or ...
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Chapter
Fracture Prediction Beyond the Linear Elastic Range
We have discussed the application of linear elastic fracture mechanics and some of its applications at length in the two preceding chapters. We recall that when the plastic zone was limited in extent, such tha...
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Chapter
The Fracture of Brittle Solids
Traditionally, mechanical engineering design has been based almost entirely on the use of ductile metals. They are tough, are relatively strong, and can readily be formed into complicated shapes. A great deal ...
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Article
Loading path optimization of a hydroformed part using multilevel response surface method
In tube hydroforming, the loading path that is the relationship between axial feeding and internal fluid pressure is of important significance. Researchers have employed various optimization approaches to find...
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Article
Biofortification of rice grain with zinc through zinc fertilization in different countries
Increasing zinc (Zn) concentration of rice seed has potential benefits for human nutrition and health. Enhanced levels of Zn in grain also contributes greatly to crop production through better germination and ...
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Article
Magneto-caloric properties of La0.7Ca0.3(Ni1−x Mn x )O3 compounds
The magneto-caloric effect and the magnetization behavior have been analyzed in the La0.7-Ca0.3(Ni1−x Mn x )O3 (x = 0.85, 0.88, 0.91, 0.94, 0.97, 1.00) compound. ...
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Article
A Load-Based Multiple-Partial Unloading Micro-Indentation Technique for Mechanical Property Evaluation
A load-based multiple-partial unloading micro-indentation technique has been developed for evaluating mechanical properties of materials. Comparing to the current prevailing nano/micro-indentation methods, whi...
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Article
ZnO and Related Materials for Sensors and Light-Emitting Diodes
ZnO is an attractive material for ultraviolet (UV) light emitters and detectors, and transparent thin-film transistors. It is also readily synthesized in the form of nanostructures. In this paper we discuss th...
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Article
Role of Gate Oxide in AlGaN/GaN High-Electron-Mobility Transistor pH Sensors
We report on a comparison of different gate oxides for AlGaN/GaN high-electron-mobility transistor (HEMT) pH sensors. The HEMTs show a linear increase in drain-source current as the pH of the electrolyte solut...
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Article
Young’s Modulus Measurement Using a Simplified Transparent Indenter Measurement Technique
In material nano- and micro-indentation research, it is well accepted to use the initial unloading stiffness of the load-depth curve to determine the material’s Young’s modulus. This approach requires the use ...
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Article
Numerical and experimental approach on energy dissipation in nano colloidal damper
Mechanical dam** systems have been widely used to various mechanical structures and systems, and are mainly hydraulic and pneumatic devices nowadays. New dam** system such as nano colloidal damper (NCD) is...
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Article
Development of Thin Film and Nanorod ZnO-Based LEDs and Sensors
The development of new etching and contact metallurgies for the ZnO/ZnMgO/ZnCdO materials system and various approaches for realizing ZnO LEDs are reviewed. ZnO nanorod MOSFETs and pH sensors have been demonst...
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Article
ZnO spintronics and nanowire devices
ZnO is a very promising material for spintronics applications, with many groups reporting room-temperature ferromagnetism in films doped with transition metals during growth or by ion implantation. In films do...
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Article
A Transparent Indenter Measurement Method for Mechanical Property Evaluation
An optical Transparent Indenter Measurement (TIM) method was developed for measurement of material surface mechanical properties. During the spherical indentation test, in-situ measurements of indentation-indu...
