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Related Concept Videos

Design Consideration01:22

Design Consideration

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Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
The factor of safety is another key...
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Design Example01:23

Design Example

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The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
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Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

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A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
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Coplanar Forces01:25

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Consider an object upon which multiple forces are acting. If the lines of action of each force lie within the same plane, the system can be considered coplanar. The Cartesian vector form can be used to resolve each force into its respective components. For a coplanar system, the system will be in equilibrium if each component of the resultant force equals zero and the resultant force on the system is zero. If the sum of the forces is not equal to zero, then the object will not be in equilibrium...
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Three-Dimensional Force System:Problem Solving01:30

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A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
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Design Example: Managing Concrete Workability01:14

Design Example: Managing Concrete Workability

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This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
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A Computational Framework for Material Design.

Shengyen Li1,2, Ursula R Kattner1, Carelyn E Campbell1

  • 11NIST/Materials Science and Engineering Division, 100 Bureau Dr. Stop 8555, Gaithersburg, MD 20899-8555 USA.

Integrating Materials and Manufacturing Innovation
|January 25, 2020
PubMed
Summary
This summary is machine-generated.

This study introduces a computational framework for optimizing material design by integrating experimental data, models, and algorithms. It demonstrates a novel Ni-Al-Cr alloy design for enhanced mechanical properties.

Keywords:
Genetic algorithmIntegrated computational materials engineeringMaterial designNi-based superalloy

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Area of Science:

  • Computational materials science
  • Alloy design
  • Mechanical property optimization

Background:

  • Integrating diverse data sources (experimental, computational) is crucial for efficient material design.
  • Optimizing material properties requires sophisticated computational tools and algorithms.
  • Ternary Nickel-Aluminum-Chromium (Ni-Al-Cr) alloys are of interest for their mechanical performance.

Purpose of the Study:

  • To propose and demonstrate a computational framework for integrated material design and optimization.
  • To illustrate the framework's capability in designing a Ni-Al-Cr alloy with a high work-to-necking ratio.
  • To facilitate the exploration of vast composition and processing spaces for material development.

Main Methods:

  • Coupling CALPHAD (Calculation of Phase Diagrams) phase equilibria and precipitation models with elastic and plastic deformation models.
  • Utilizing a genetic algorithm to guide the optimization of composition and processing parameters.
  • Calculating stress-strain curves to evaluate mechanical properties.

Main Results:

  • A demonstration of the framework's successful application in designing a ternary Ni-Al-Cr alloy.
  • Identification of optimal composition and processing profiles for enhanced mechanical properties.
  • Validation of the integrated approach for material design optimization.

Conclusions:

  • The proposed computational framework effectively integrates experimental data, models, and algorithms for material design.
  • This approach offers a viable solution for initiating material design in complex compositional and processing landscapes.
  • The framework is adaptable for various material systems and classes, promising broader applications in materials science.