Products/Services for Cottrell Equation

No Image AvailableFinitedifference timedomain (FDTD) Software  (5 companies)Finitedifference timedomain (FDTD) software is a analysis that models electrodynamic systems by finding approximate solutions to a set of differential equations associated to the system. Finitedifference timedomain (FDTD) software is a numerical... Learn More

Thermal Management Design and Analysis Services  (141 companies)Thermal management design and analysis services perform tests and redesigns around thermal dissipation issues. Search by Specification  Learn More

Venturi Vacuum Generators  (78 companies)...alignment, and surface mounting. For all types of workholding, the hold down force required for a part can be calculated by the following equation: F = Apart x Pvac. where F is the holding force, Apart is the area of the part being held in sq. inches (in2... Search by Specification  Learn More

No Image AvailableDifferentials and Axles  (38 companies)A differential is a mechanical connection that translates rotational motion from a source to two axles. The driveshaft generally runs the length of the vehicle, from the energy input (a motor) to the energy output (the wheels). The axle of the driving wheels is split, with the driveshaft transferring motion through gearing arrangements to maintain a uniform direction and speed of the (live) axles. This arrangement is very common in rearwheel drive cars and trucks, but is also employed in aircraft, production machinery and equipment, trains, and ships. Learn More

Thermistor Temperature Probes  (130 companies)Thermistor temperature probes sense temperature by using thermistors, devices made of semiconductor materials which exhibit a large change in resistance for a small change in temperature. Search by Specification  Learn More
Product News

IHS ESDU
Stressstrain curves for metallic materials Product Announcement from IHS ESDU. One of the most popular methodologies used within the ESDU Aircraft Structures discipline. Overview of smooth continuous stressstrain curves for metallic materials. This Item describes a generalised method for representing a smooth stress/strain curve by an equation involving Young's modulus, a reference stress and a characteristic index. The determination of those last two quantities is explained. The method is valid for tension or compression and provides... (read more)Browse Standards and Technical Documents Datasheets for IHS ESDU 
MICROMO
Explore the MICROMO MOTION App Today Explore the MICROMO MOTION App Today. Are you ready to try MICROMO ’s new MOTION app, a DC motor calculator app for use with both iPhone and Android devices? MOTION is designed to help engineers calculate DC motor performance data by providing speed, torque, voltage and other catalog data. The app will also facilitate easy connection between customers and FAULHABER Group products by integrating a contact form (available on the MICROMO website). MOTION Equation Calculator. Users... (read more)Browse DC Motors Datasheets for MICROMO 
IHS ESDU
Stability of any system that can be modelled ESDU Dynamic. The treatment of stability, response and controllability of any system that can be modelled, for some part of its motion, by linear constant coefficient differential equations. ESDU Dynamics is a treatment of the behaviour and motion of a system and the resulting stability and controllability of that system, particularly under nonsteady conditions where the dynamic nature of the system plays an important part in determining its behaviour. There are a couple of sections within... (read more)Browse Standards and Technical Documents Datasheets for IHS ESDU 
Epoxy Technology
Tech Tip 13  Surface Preparation In adhesive bonding the epoxy is only one part of the equation. Each substrate that is being adhered to is often as important as the adhesive selection. Physical properties such as bond strength, conductivity, and bond reliability all hinge on the interface between substrate and adhesive. The adhesivesubstrate interface is a sensitive equilibrium that can be upset by even the slightest contaminants. In preparing a surface for adhesive bonding users can increase reliability and productivity... (read more)Browse Epoxy Adhesives Datasheets for Epoxy Technology 
IHS ESDU
IHS ESDU launches its second ‘app’ feature . Wing liftcurve slope from ESDU TM 169. This app employs a modified version of the HelmboldDiederich equation (described in ESDU TM 169) to estimate the liftcurve slope of a wing of trapezoidal planform. In order for the method to be applicable the wing must be thin and employ only moderate camber and twist, and the flow must remain both attached and wholly subcritical. Compressibility effects are catered for by means of the classic PrantlGlauert factor. The original HelmboldDiederich... (read more)Browse Modeling and Simulation Software Datasheets for IHS ESDU 
Ametek Solartron Metrology
SI 5500 mathematical formulae and Algebraic Equations to get wide variety of results for their gauging applications. ... (read more)Browse Dimensional Gages and Instruments Datasheets for Ametek Solartron Metrology 
Strainsert
Instrumented Clevis Pins for Sheave Applications line tension by monitoring reaction load on the pin. Using the equations provided below, the line tension can be determined. Constant Wrap Angle. For a sheave with a constant wrap angle, the resultant load can be oriented in relation to a single force sensing axis and the following equations apply. *Axis of Maximum Sensitivity: Align Keeper Flat of Load Sensing Pin perpendicular to Axis of Maximum Sensitivity which is at one half the wrap angle. For this example, wrap angle = 105 degrees and Ø/2... (read more) 
IHS ESDU
Reliable Data Sources for Key Industrial Chemicals The ESDU Physical Data, Chemical Engineering Series provides the most reliable correlated data available for the physical properties of a wide range of pure compounds, and some mixtures, used in a wide range of industries from petrochemical to aerospace. The data, which are provided as equations and in tabular form, are based on the most reliable experimental data, both reported and unreported. Within compound groups, data are extrapolated beyond experimental temperature ranges in a consistent... (read more)Browse Standards and Technical Documents Datasheets for IHS ESDU 
Advanced Abrasives Corp.
ParticleSize Measurement for Superabrasives Advanced Abrasives incorporates many different techniques and instruments to measure the distributions characteristics. This will insure consistent products from lot to lot leaving the guess work and variability out of the equation for the end user. InstrumentMeasurement Technique Horiba  LA 910Laser light scattering Coulter  Multisizer 3Electric sensing zone Microtrac  S3000 / X100Laser light scattering CPSCentripetal force and laser Image Pro  Image AnalysisMicroscopy (read more)Browse Diamond Powders and Superabrasive Grains Datasheets for Advanced Abrasives Corp. 
Buckeye Machine Fabricators, Inc.
Finite Element Analysis by breaking down a real object into a larger number (thousands to hundreds of thousands) of finite elements, such as little cubes. Mathematical equations help predict the behavior of each element. A computer then adds up all the individual behaviors to predict the behavior of the actual object. Finite element analysis helps predict the behavior of products affected by many physical effects, including: Mechanical stress. Mechanical vibration. Fatigue. Motion. Contact Buckeye Machine... (read more)

Bio/CMOS Interfaces and CoDesign
Cottrell Equation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrochemistry of Insertion Materials for Hydrogen and Lithium
By converting the Nyquist plot into the time domain, the Warburg impedance including the common factor oÀ1/2 becomes simplified to the Cottrell equation including .

Electrochemical Dictionary
Cottrell equation [i–iv].

Electrochemical Dictionary
current flows at any time after application of the potential step will obey the Cottrell equation [i–iv].

Electrochemical Effect of Different Modified Glassy Carbon Electrodes on the Values of Diffusion Coefficient for Some Heavy Metal Ions
… the modified film electrodes, demonstrated in the application study for different heavy metal ions such as Hg2+ , Cd2+ , and Mn2+ . Cyclic . voltammetric effect by chronoamperometry (CA) technique was investigated to determination the diffusion coefficient (Df) values from Cottrell equation at these ions.

Encyclopedia of Applied Electrochemistry
… of the electrochemically active species does not take place, to E2, where the current belongs to the electrode reaction and is limited by diffusion, the current flow at any time after application of the potential step will obey the Cottrell equation [1–4].

Environmental Analysis by Electrochemical Sensors and Biosensors
Under similar conditions the dependence of the current density on time is given in any cases by the Cottrell equation : .

Memristor Kinetics and Diffusion Characteristics for Mixed Anionic‐Electronic SrTiO 3‐δ Bits: The Memristor‐Based Cottrell Analysis Connecting Material to Devi...
This work presents the first description of a memristorbased Cottrell equation and gives the basis for analysis of materialdependent carrier diffu sion coefficients in mixed conducting anionicelectronic mem ristors.

Electroanalytical Methods
which is called the Cottrell equation .

Chronoamperometric Investigations of the Electrode–Electrolyte Interface of a Commercial High Temperature PEM Fuel Cell
An extension of the Cottrell equation is deduced to describe a regular commercial fuel cell behaviour.