Products/Services for Cottrell Equation

Finitedifference 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...Show More

Venturi Vacuum Generators  (79 companies)...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), and Pvac is the vacuum pressure...Show More

Thermistor Temperature Probes  (132 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.Show More

Thermal Management Design and Analysis Services  (143 companies)Thermal management design and analysis services perform tests and redesigns around thermal dissipation issues.Show More

Electrochemical, Photochemical, and Chemical Milling Services  (113 companies)Electrochemical, photochemical and chemical milling services use etching, electrochemical, and photochemical processes to create unstressed, highprecision parts.Show More

Graphing and Visualization Software  (163 companies)Graphing and visualization software visually present abstract scientific data. The programs take numerical data and create (render) images for analysis.Show More

Color Sensors  (99 companies)Color sensors register items by contrast, true color, or translucent index. True color sensors are based on one of the color models, most commonly the RGB model (red, green, blue).Show More

Office Suite Software  (28 companies)Office suite software packages are collections of programs that are generally distributed together, have a consistent user interface, and can typically interact with each other in ways that an operating system wouldn 't necessarily allow.Show More

Differentials and Axles  (39 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.Show More

Drawing Software  (22 companies)Drawing software aids in creating illustrations using vectors and/or rasters in two or three dimensions; illustrations are often represented as charts, diagrams, graphs, and images.Show More
Product News

CST  Computer Simulation Technology
Integral Equation Solver CST MICROWAVE STUDIO (R)  Integral Equation Solver (MLFMM). CST MWS's Integral Equation Solver is again a specialized solver. It is dedicated to electrically large structures, which are governed by metal; dielectrics, lossy and lossfree, however, can be taken into consideration. CST MWS's Integral Equation Solver is using a Method of Moments (MoM) discretization with a surface integral formulation of the electric and magnetic field. In order to reduce the numerical complexity a Multilevel Fast... (read more)Browse Finite Element Analysis Software Datasheets for CST  Computer Simulation Technology 
Victrex plc.
Changing the Equation in Aerospace Composites VICTREX (R)AE250 Composites  Unidirectional Tape and Laminate Panels. New composite material solutions and gamechanging hybrid molding process delivering an unmatched combination of cost reductions, weight savings, design freedom, strength and production speed in nextgeneration components. Improve Aircraft Efficiency by Reducing Weight and System Costs. Reduce system costs and optimize your buytofly ratio while increasing throughputs vs. metal and thermosets. Improve installation times vs. (read more)Browse Plastic Sheet and Plastic Film Datasheets for Victrex plc. 
Hotwatt, Inc.
Electric heater types & heat transfer Whitepaper Learn about electric heat and types of electric heaters as well as heat transfer, heat losses, basic heat equations, specific applications with example and watt density in a five page PDF. (read more)Browse Electric Heaters Datasheets for Hotwatt, Inc. 
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 
IHS ESDU
IHS ESDU launches its second ‘app’ feature 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 equation was often used... (read more)Browse Modeling and Simulation Software Datasheets for IHS ESDU 
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 
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) 
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 will be able... (read more)Browse DC Motors Datasheets for MICROMO 
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 
IHS ESDU
Coupling Loss Factors in Vibration and Acoustics Introduction. In Statistical Energy Analysis the coupling loss factor represents a dimensionless measure of the power loss between two subsystems. The concept of the coupling loss factor is unique to SEA. The coupling loss factor is a vital part of the equation for the power transfer between the two subsystems and represents the dimensionless power loss from subsystem 1 to subsystem 2. The two subsystems involved in the SEA estimations may be two structures, such as plates or cylinders... (read more)Browse Standards and Technical Documents Datasheets for IHS ESDU

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.

SPECTRAL AND ELECTROCHEMICAL STUDY OF THE RESPONSE
MECHANISM OF IONOPHOREBASED
POLYMERIC MEMBRANES
…155 158 158 161 175 Parameters used to fit the data from the NPV curves for a given ionophore with equations (3.9) and (3.11) along with the average diffusion coefficient (D) obtained from the Cottrell equation for at least three…

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 .