# Engineering

• ## Most Topular Stories

• ### Key Tips to Convert CAD Data in Effortless Way for Better Accuracy

The Engineering Design
20 Jan 2015 | 11:13 pm
Computer Aided Design (CAD) is the use of computer system that allows engineers, drafters, artists and architects in diagramming 2 dimensional and 3 dimensional curves and figures. CAD is the means by which we express the language of design. If you take part in a digital design and manufacturing process you must share or receive product data in digital form – usually a CAD file. Sharing CAD files mostly means converting CAD along with its contents from one format to another. The basic reasons that lie behind it are: • People sharing CAD files are using 2 divergent CAD systems • 2…
• ### How to Size a Control Valve for Liquid and Gas Applications Using a Selection Chart

Learning Instrumentation And Control Engineering
23 Jan 2015 | 9:51 am
(adsbygoogle = window.adsbygoogle || []).push({}); Control valve sizing is big business. Often there is a thin line between getting it right or wrong with unintended consequences for the process... Looking for quality content on instrumentation and control engineering? Come along!
• ### BIM Services and its Contribution to Modern Engineering

The Engineering Design
3 Dec 2014 | 8:18 pm
BIM in simple words is software enabling a task associated with the creation of engineering plans, designs, construction etc. In other words it is the digital representation of the same. The idea that it has created a revolution in the world of architecture and engineering is mostly because of the fact that traditionally building designs were mostly 2 dimensional drawings and nothing more than mere geometric presentations. BIM tool in collaboration with other tools like CAD (Computer Information Modelling) MEP services has brought much change in the modern day engineering and construction…
• ### IABSE Future of Design North 2015

Being Brunel
22 Jan 2015 | 5:00 am
Being Brunel | The Civil Engineering Blog About the Author Ed Dablin Ed is a recently chartered Senior Engineer working for AECOM in Altrincham with 5 years experience working on a range of bridge projects ranging from long span bridges to rail bridge reconstructions. Outside of work he is a STEM Ambassador and has recently been helping to deliver a number of IABSE events in Manchester. Find out more: LinkedIn Ed.(itor): What’s that? Another post about an IABSE Future of Design event? Well- what can I say; they’re good events. I’m now a veteran (this’ll be my third),…
• ### Commentary: BIM for infrastructure has a bright future

ASCE SmartBrief
29 Jan 2015 | 7:58 am
Building information modeling has mainly been used for vertical construction, or buildings, but writer Suibhne Cullen contend -More-
• ## ASCE SmartBrief

• ### Commentary: BIM for infrastructure has a bright future

29 Jan 2015 | 7:58 am
Building information modeling has mainly been used for vertical construction, or buildings, but writer Suibhne Cullen contend -More-
• ### Foxx presses Congress to pass transportation funding

29 Jan 2015 | 7:58 am
Transportation Secretary Anthony Foxx testified before a Senate hearing Wednesday and urged Congress to pass a transportation -More-
• ### Civil Engineering online exclusive: Sea Levels Rising More Rapidly, Harvard and Rutgers Experts Say

29 Jan 2015 | 7:58 am
Researchers examining tidal-gauge records find that global mean sea level increased more slowly between 1901 and 1990 than on -More- Mining Engineering Professor Polytechnique Montreal
• ### Boxer says Highway Trust Fund deficit smaller than expected

29 Jan 2015 | 7:58 am
Sen. Barbara Boxer, D-Calif., says the deficit in the Highway Trust Fund is less than had been projected.  -More-
• ### Report shows more women, men earning STEM degrees

29 Jan 2015 | 7:58 am
The number of women and men earning degrees in science, technology, engineering and math increased between 2004 and 2014, acc -More-

• ## Top Stories from ENR.com

• ### Coming Soon: More Drone Insurance Options

28 Feb 2015 | 10:36 am
Contractors and engineers that are using drones soon may be able to buy standardized insurance coverage from a greater number of insurers.
• ### Test Drive: 2015 Ram ProMaster City Compact Work Van

23 Feb 2015 | 10:23 am
Among the recently introduced group of compact commercial vans, Ram introduces a new small model that casts a big shadow.
• ### ACE Mentor program names new CEO; Ex-PB Chief Launches Consulting Firm

1 Feb 2015 | 9:00 pm
• ## Engineering News -- ScienceDaily

• ### Building trustworthy big data algorithms

29 Jan 2015 | 2:04 pm
Much of our reams of data sit in large databases of unstructured text. Finding insights among emails, text documents, and websites is extremely difficult unless we can search, characterize, and classify their text data in a meaningful way. A new algorithm shows better accuracy and reproducibility than the leading algorithm for mining unstructured text.
• ### Spiky 'hedgehog particles' for safer paints, fewer VOC emissions

28 Jan 2015 | 10:12 am
A new process that can sprout microscopic spikes on nearly any type of particle may lead to more environmentally friendly paints and a variety of other innovations.
• ### Demystifying nanocrystal solar cells

28 Jan 2015 | 9:54 am
Researchers have developed a comprehensive model to explain how electrons flow inside new types of solar cells made of tiny crystals. The model allows for a better understanding of such cells and may help to increase their efficiency.
• ### Bike-to-work events offer chance to explore barriers to cycling

28 Jan 2015 | 8:39 am
Cities that host bike-to-work events as their sole effort to increase commuter travel by bicycle may be missing a larger -- perhaps more valuable -- opportunity, according to a study. Local governments should use bike-to-work days to find out from participants why they're attending and -- more importantly -- what prevents them from biking more often, according to the study.
• ### A robot to help improve agriculture and wine production

28 Jan 2015 | 8:37 am
Agricultural researchers and computer scientists are working on the development of an unmanned robot, equipped with non-invasive advanced sensors and artificial intelligence systems, which will help manage vineyards. This robot will provide reliable, fast and objective information on the state of the vineyards to grapegrowers, such as vegetative development, water status, production and grape composition.

• ## Chemical & Engineering News: Latest News

• ### Large, High-Quality Crystals Boost Perovskite Performance

29 Jan 2015 | 4:49 pm
Materials: Improvements in size and crystallinity bolster perovskite’s charge transport properties
• ### Protein Arginine Deiminases Come Into Focus

29 Jan 2015 | 4:47 pm
Chemical Biology: Scientists home in on drug targets for cancer, inflammation
• ### Why Sodium And Potassium Really Explode In Water

29 Jan 2015 | 4:47 pm
Inorganic Chemistry: High-speed photography and modeling reveal that classic reaction gets its oomph from sudden repulsion between alkali ions
• ### Nobel Laureate Yves Chauvin Dies At 84

29 Jan 2015 | 4:28 pm
French chemist was known for his work on the mechanism of olefin metathesis
• ### Carbenes Take On A New Dimension

29 Jan 2015 | 3:49 pm
Asymmetric Synthesis: Pairing ferrocene with an imidazolium ring system results in planar chiral catalysts
• ## CENtral ScienceCENtral Science

• ### Lab-safe, professional shoes for women

29 Jan 2015 | 3:30 am
A query from chemistry reddit: Good lab shoes? I’m about to enter the corporate world but was having trouble finding women’s shoes both safe and professional. Do you know of any good brands or styles? I’d prefer low or no heel. Sanita or Dansko (closed-back) clogs are the main suggestions given. Anyone have other suggestions? Related Posts:Fashion Police: Science ShoesBoost your lab ergonomics IQAmusing News AliquotsAmusing News AliquotsAmusing News Aliquots
• ### Piranha solution explosions

16 Jan 2015 | 4:30 am
From the C&EN archives, but I believe still relevant today: April 23, 1990, page 2 SIR: We wish to report two violent explosions experienced with a sample of “piranha solution” used routinely in many laboratories to clean badly soiled glass frits and other surfaces. At Berkeley an explosion occurred in a bottle of this mixture that had been stored for several days. In this case, the solution was prepared by carefully mixing approximately 150 mL concentrated sulfuric acid with 150 mL 30% hydrogen peroxide with cooling over 30 minutes. No difficulty was experienced during the…

13 Jan 2015 | 4:30 am
Finger ring dosimeter. Credit: International Atomic Energy Agency I’ve seen radiation badges before, but never a ring. Courtesy of the International Atomic Energy Agency‘s Facebook page: This type of ring is a small badge that workers wear under gloves to monitor external exposure to ‪#‎radiation‬ as they work with different types of radioactive sources. The little diamond shape on the ring is worn facing the palm, as this is the area where highest exposure usually occurs. This ring is just one of many different types of radiation exposure monitoring badges. Badges like…
• ### Lawsuits detail injuries from rainbow demonstration fire in New York school

6 Jan 2015 | 4:30 am
A wooden stick soaked in a lithium chloride solution glows fuschia when burned. Credit: Jillian Meri Emerson/UC DavisThree lawsuits have now been filed by families of students injured a year ago when a New York high school teacher poured methanol from a gallon container during a “rainbow” flame test demonstration. New York Post stories about the lawsuits give some details of the students’ injuries: Alonzo Yanes suffered second- and third-degree burns on his body, head, face, neck, torso, and hands. “He’s horrifically scarred, wearing all sorts of protective clothing and…
• ### Something to do in lab today

5 Jan 2015 | 4:30 am
This seemed like such a useful lab safety activity that I thought I’d make it a monthly repost. From Derek Lowe, in memory of people who died in chemical incidents: So in memory of these four, here’s something that all of us who work in the lab can do today. Take a look around you. Remind yourself of where the fire extinguishers are (and there should be more than one kind). Think of how you’d get to the safety shower if you had to use it. And pick the door you’ll use if a situation get beyond that. It’s far easier to go over such details when things are quiet, and if you do that…

• ## Engineering Ethics Blog

• ### High Time for Satellite Tracking of All International Flights

26 Jan 2015 | 3:28 am
This coming March 8 will mark one year since Malaysia Airlines Flight 370 disappeared from radar en route from Kuala Lumpur to Beijing somewhere over the Indian Ocean.  The wreckage has never been found, although communications experts used some almost accidental satellite-transponder data to estimate the last known location of the plane.  At the time, I recall thinking that if I was an airline and owned a number of high-value mobile assets known as airliners, I would want some way of knowing where each one was every minute or so, anywhere in the world.   After all, the…
• ### The Passing of Google Glass

19 Jan 2015 | 3:44 am
• ### Skkynet Expands Secure Cloud Service Registration for Embedded and IoT System Users

27 Jan 2015 | 1:14 pm
Skkynet Cloud Systems recently opened registration for its Secure Cloud Service, giving system engineers and managers of industrial, embedded, and Internet of Things (IoT) systems quick and easy access to a secure, end-to-end solution for networking data in real time. The … Continue reading →
• ### 8-MHz, 16-Bit, USB Arbitrary Waveform Generator

27 Jan 2015 | 1:02 pm
ACCES I/O Products has announced the release of a new USB high-speed arbitrary waveform output board with flexible ranges and configurable digital I/O lines. Industry-standard BNC connectors are used for the analog waveform output and the gate control input, while … Continue reading →
• ### Radiation-Hardened QDR-II+ SRAMs Achieve QML Class V Certification

27 Jan 2015 | 12:41 pm
Cypress Semiconductor Corp. recently announced its radiation-hardened (RadHard) 72-Mb Quad Data Rate II+ (QDR-II+) SRAMs and 4-Mb fast asynchronous SRAMs have achieved Qualified Manufacturers List Class V and Class Q requirements—the highest standards of quality and reliability for aerospace-grade ICs. The … Continue reading →
• ### New Power MOSFET Drivers Feature Thermally Efficient, Small Packages

27 Jan 2015 | 12:39 pm
Microchip Technology recently announced the first power MOSFET drivers in a new product family—the MCP14A005X and MCP14A015X. The drivers feature a new driver architecture for high-speed operation. The new devices’ small packaging (SOT-23 and 2 mm × 2 mm DFN packages) enables higher … Continue reading →
• ## Techno Genome

5 Jan 2015 | 11:23 pm
Dear all the readers of Techno Genome, I would like to wish you all a very very Happy New Year 2015. I wish You get success in all the field in this year. I really need your help, as You know Techno Genome is a great blog on Civil Engineering and is focused in providing worthy articles about the same, since its inception. But To keep this blog alive and running I’ve to give the charges for its Hosting DNS and Internet Services required to put The Techno Genome up and running and so that I can write and publish articles over here and so that You can read it and gain knowledge. But…
• ### Home Made Waterproofing Compound Cheaply

23 Dec 2014 | 8:10 am
Today I’m here going to discuss about how to make waterproofing compound by self at the site during the construction with cheaply available materials. I know it has been a long time since my last article, and maybe you, who are following Techno Genome regularly know the reason behind that, anyways let us concentrate on today’s topic. First of all we have to understand what a Waterproofing Compound is, and why it is required in a Civil Engineering Construction works. A Waterproofing compound is nothing but a chemical in the form of liquid or powder which when mixed with concrete or…
• ### To All The Readers Of Techno Genome

22 Nov 2014 | 8:47 am
Hello everyone, I’m Ranadip, The Author and The Founder of Techno Genome . I’m really sorry everyone, because I’m not posting new articles for some time, this because I’m really really busy until mid of the next month, I’m preparing for Entrance of a Govt. Job, Wish me Best of Luck, as it is very much important for me to get this Job for supporting Myself and My Family and to Continue Techno Genome and its Excellence. I’m really sorry please wait a few days more, I will compensate all this gap in the next month with Some of the Finest Article Which You will…
• ### Brickwork Quality Control

3 Nov 2014 | 9:18 am
Here I’ve listed the most important factors which are to be taken care of while doing Brickwork of any nature structural brickwork or face lifting works in brickwork for better appearance. These points mentioned below should always be taken care strictly in the site of construction for achieving a long lasting durable structure. The bricks should be of 1st class quality for structural works, or atleast of 2nd class quality in unavoidable circumstances, but those 2nd class bricks must posses atleast 60% of the field quality checks of bricks. The bricks should be immersed in water for a…
• ### Septic Tank Design Easily 5 Minutes

6 Oct 2014 | 12:37 am
Septic System Design or Septic Tanks Design can be done in various process, but most of them are critical and time taking laborious process. Here in this article I have given tutorial on how to design Septic Tank Easily within 5 minutes and Determine Septic Tank Size. Here I will also discuss on this article about septic tank design about the general Septic Tank Construction for designing of septic tank successfully you have to follow the steps given below one by one Step 1: Septic Tank Design – Calculation of Numbers of User :  In any septic system design or septic tank design this is…

• ## Caster Concepts » Beyond Standard Blog

• ### Feeling Groovy? There’s An Industrial Caster For That!

14 Jan 2015 | 6:34 am
For centuries, industry has been guided by a smooth, slender track. Whether bearing the weight of the great iron horse trains that crisscrossed North America, or used more modestly to move cargo carts throughout vast manufacturing plants, track-guided transport is considered to be the lifeblood of many production and logistics operations. Ensuring that these loads make it to their eventual destination is often a “groovy” experience – specifically, the grooved heavy-duty wheels which contour to the track. There are three basic types of grooved industrial caster wheels which are commonly…
• ### Keep Your Industrial Casters Rolling: Four Pitfalls To Avoid

23 Dec 2014 | 5:21 am
Caster science has come up with a solution for almost every possible wheel-bound application. No matter the weight, terrain or cart, the right heavy-duty caster will almost invariably be a long-lasting and easy-to-maintain component of your manufacturing operation. However, no object is indestructible – and heavy-duty casters are no different. When used in a manner that is not recommended by the industrial caster manufacturer, caster failures can and will happen. That’s why it’s important to make sure you are aware of the environment your heavy-duty caster will be subject to, and that…
• ### Picking Caster Wheels for the Heaviest Loads – Nine Important Questions to Ask

16 Dec 2014 | 10:47 am
For decades, forklifts have been the heroes of the manufacturing plant. It’s hard to think of any production facility that hasn’t deployed these powered machines in one aspect of its manufacturing process. But increasingly, safety, liability and cost issues have spurred a movement to “forklift-free” production. In fact, an article in American Machinist documented the trend, and attempted to explain the pros and cons of such a shift. But one consideration that shouldn’t be overlooked is the selection of heavy-duty caster wheels on the pushcarts and manual machinery that will be…
• ### Tiny Movements, Big Headaches: How TWERGO® Helps Move Industrial Carts, Inch By Inch

8 Dec 2014 | 2:10 pm
In a previous blog, we talked about simple changes you could make to a heavy assembly cart that would improve its maneuverability, and also increase its contributions to a more efficient manufacturing operation. But often, it’s the most minute of movements that have the greatest impact when trying to position your industrial cart into the precise location it is needed. Though many industrial carts get a “power-assist” by Automatic Guided Vehicles (AGV’s) or Human Operated Tuggers across a distance, it is these short and precise movements that often have to be performed manually.
• ### Assembly Carts Bear the Brunt of Manufacturing’s Heaviest Trials – Are Your Industrial Casters Up to the Challenge?

2 Dec 2014 | 6:12 am
Assembly carts are manufacturing’s utility player – the lumbering linchpin of the factory, whether delivering materials used in the manufacturing process, or removing goods that are ready for sale. Such carts are a critical link in the manufacturing chain – often moving loads that tip the scales at thousands of pounds or more. With the cart itself adding hundreds of pounds to the equation, this results in a lot of weight that an individual has to handle at some point – singlehandedly having to push, pull, turn or maneuver the assembly carts and loads. This puts a tremendous amount of…
• ## My Engineering Info

• ### Equivalent Circuit of a Three Phase Induction Motor

28 Jan 2015 | 8:51 pm
In a three phase induction motor the stationary winding is connected to the three phase supply and rotor winding is short circuited. The energy from the stator winding is transferred magnetically to the short circuited rotor winding. Thus the induction motor might be deliberated to be a transformer with secondary winding (rotor short circuited winding). The stator windings refer to the primary of transformer and the rotor windings refer to the secondary of transformer. In view of the comparison of flux and conditions of voltage in a transformer, each can assume that the induction motor…
• ### Principle Operation of Three Phase Induction Motor

25 Jan 2015 | 2:16 am
The figure shows the portion of a three phase Induction motor and is principle explained below:  The three phase stator winding gets energized when a three phase supply is given to the stator winding, a rotating magnetic field is produced which revolves round the stator its synchronous speed (Ns= 120f/p).   Then the rotating magnetic field moves through the air gap and cuts the conductor of rotor, till now which is stationary. Because of the virtual speed amongst the stationary rotor and the rotating flux, EMF’s are induced in the conductors of rotor. Since the rotor…
• ### Construction of Three Phase Induction Motor

21 Jan 2015 | 8:43 pm
Three phase Induction motor consist of 2 important parts namely Stator and rotor. Always the stator and rotor is separated with a small air gap ranging from 0.4-4 mm, which is depends on the size and capacity of the motor. Stator: It contains a steel frame that surrounds a hollow cylindrical shaped core made of skinny laminations of silicon steel to cut back hysteresis loss and eddy current loss A number of equally spaced slots are providing on the inner bound of the laminations as shown in the fig above. The insulation connected to arrange a balanced three phase star connected circuit or…
• ### Introduction of Three Phase Induction Motor

19 Jan 2015 | 3:03 am
The three phase induction motors are commonly used electric motors in the industry. These motor basically runs from no load to full load at constant speed. Though, the speed of the motor is dependent on the frequency. Normally we prefer DC motors whenever the required speed variation is large. On the other hand the three phase induction motors are simple, rugged, and low cost; maintenance is easy and can be manufactured with the suitable characteristics for the requirement of industries. Similar to any electric motor, three phase induction motors also have a rotor and stator. The…
• ### Sumpner Test or Back to Back Test on Transformer

17 Jan 2015 | 6:56 am
This test is conducted instantaneously on two similar transformers and so the transformers temperature rise, efficiency and voltage regulations. The advantage of conducting this test is very economical of power, even when the transformers are tested at full load conditions. The total losses of both the transformers are equal to the power required to conduct this test. It might be noted to carry out this test that the two transformer needs to be identical.   Circuit: The figure above shows that the connection diagram of back to back test on two similar transformers named T1 and T2. The…
• ## Engineering Problems and Answers

• ### C Programming: Inserting at Start and End of a Singly Linked List and Displaying the List

26 Jan 2015 | 6:07 am
Here is a program which inserts at the start and end of a Singly Linked List, as well as, display the list from start to end.The program consists of 4 functions:       - insertEnd(int data): void            This function inserts the data entered by the user at the end of the list       - insertStart(int data): void            This function inserts the data entered by the user at the start of the list       - display(): void            This…
• ### AC Circuits: Equivalent Reactance of a Series RLC Circuit problem #1

22 Jan 2015 | 2:35 am
A 100-ohm resistor, 5mH inductor, and a 10uF capacitor are connected in series. Calculate the equivalent reactance. To calculate the equivalent reactance of the circuit in the figure below, we need to use the formulas written HERE.Solving for the inductive reactance,X_L = 2{\pi}f{L_1}X_L = 2{\pi}(1kHz)(5mH)X_L = 31.42\OmegaSolving for the capacitive reactance, X_C = \frac{1}{2{\pi}f{C_1}}X_C = \frac{1}{2{\pi}(1kHz)(10{\mu}F)}X_C = 15.92\OmegaNote: As much as possible, don't round off the values except the final answer in order to have minimal errors. This is applicable not just with this…
• ### Java Programming: Program that adds two (2) floats

19 Jan 2015 | 4:36 pm
Here is a program that adds two (2) floats. The program only accepts numbers. It keeps asking for input until a number is entered. The function add(float addend1, float addend2) returns the result in float.code:When operating on floats, the computer, sometimes, doesn't give the right answer. The computer isn't actually wrong. Read the explanation HERE. We can format the answer we print as a workaround for this (see code lines 36 and 37).You may use this or any part of this program for noncommercial use, i.e. your assignments, projects, teaching programs.If you have questions/suggestions,…
• ### Logic Circuits: 4-bit K-Map (Karnaugh Map) problem #1

19 Jan 2015 | 6:39 am
Simplify the following function using K-map: F(w,x,y,z) = Σ(8,10,12,13,14)Solution:This is a summation of minterms, therefore, 8, 10, 12, 13, and 14 are all 1's.We can group the four 1's (the one's in Green) since there is only 1 bit difference from bits 00 to 10 (see figure). Please, review on Gray Code to understand better. And, we can group the two 1's (1's in Red). When dealing with minterms, an x is equal to 1 and an x' is equal to 0. Zero's will be listed as x' and one's as x.Listing them, we get:F = (w + w + w + w) (x + x + x' + x') (y' + y' + y + y) (z' + z' + z'…
• ### Logic Circuits: 3-bit K-Map (Karnaugh Map) problem #2

18 Jan 2015 | 9:29 pm
Simplify the following function using K-map: F(A,B,C) = Σ(0,2,3,7)Solution:This is a summation of minterms, therefore, 0, 2, 3, and 7 are all 1's. We can't group the 4 of them together since they don't form a square in the K-map (see figure). We can group them by pair. Notice the ones grouped in red. They can be grouped together since the difference between bits 00 and 10 is only 1 bit, and we can only group together bits that are 1 bit apart (review Gray Code, K-map is in Gray Code). When dealing with minterms, an x is equal to 1 and an x' is equal to 0. Zero's will be listed as x' and…