CrazyEngineers Forum

Using banana peels to clean polluted water
Pattern making materials.
Social networking sites
Maruti Suzuki To Call Back 13,157 Swift, Dzire & Ritz, SX4 Diesel Cars
Books You Are Reading Right Now
CE badges on facebook
Application Of Friction Part 2
Application Of Friction Part 1
Friction - Video Lecture
Cables - Video Lecture
Internal Forces In Beams
Darn This Exam Season!
Micromax Bling 2 Coming Soon
Linux Simple Command Reference Guide
Algorithm in Data Structures PDF Download

Using banana peels to clean polluted water

Posted: 06 Apr 2011 08:46 AM PDT

This is quite interesting. Researches funded by the Sao Paulo Research Foundation have found that minced banana peels are effective at absorbing toxic metal from water. Its good to know we can rely on nature for help rather than expensive chemicals that may do more harm than good. Perhaps CEans can fabricate a banana peel flotilla to clean their local river ;)

Source: Toxic Metals in Your Water? No Problem, Have a Banana – CleanTechnica: Cleantech innovation news and views

Pattern making materials.

Posted: 06 Apr 2011 06:21 AM PDT

Hi friends, there are a few pattern making materials which are used widely in industry.
I will be telling you about them. Please correct me if I get wrong somewhere.

1.Wood: Wood has been a popular choice amongst foundry shops. It is very common and cheaply available. Mostly Burma, C.P.Teak is used. Wood has a tendency to warp.
Mostly nowadays compressed wood laminates and laminated wood impregnates are used. Laminated woods are nothing but resins.

2.Metal: This has an advantage that it does not have any storage problems.
Whenever any metal is used as a pattern, a shrinkage allowance is given to it.
The various metals commonly used are
cast iron: It is very brittle and is not used for applications involving shocks hence it is available cheap than other iron and steel varieties.
Brass: Heavier than cast iron but it does not rust. and also, it is restricted to smaller patterns.
Aluminium: Melts at a very low temperature, soft and easy to make pattern. Only draw back is that it can break hence has to be handled with care.
White metal. It is the best metal that can be thought of. It melts at 473 K and does not shrink much.

3.Plasters: Nowadays, gypsum is used as a pattern making material. It has a compressive strength of 275-300 kg/cm2. The various varieties of plasters in market are Hydrocal and Hydrostone etc.

Rubbers, waxes and plastics are nowadays used mostly because they are cheap. They have the exact properties for a pattern materials. Mostly thermoplastics and epoxy resins are used in plastic and wax varieties respectively.

Social networking sites

Posted: 06 Apr 2011 05:46 AM PDT

Do you think social networking sites are eating our useful time?

But what do you think what is their main aim? If I can give you a hint, start with 'what do you think is social networking?' :rolleyes:

Maruti Suzuki To Call Back 13,157 Swift, Dzire & Ritz, SX4 Diesel Cars

Posted: 06 Apr 2011 05:34 AM PDT

Maruti Suzuki India has issued a press release saying that the company will call back 13157 Swift, Dzire and Ritz Diesel Engine cars. The company has discovered a flaw in the 'Connecting Rod Bolt' in the cars manufactured between mid November 2010 and first week of December 2010.

A defect in the 'Connecting Rod Bolt' may cause abnormal noise in the engine of the suspected car. If the Bolt breaks, it could cause the engine to stall.The replacement of the 'Connecting Rod Bolt' will be done on free of cost basis. Maruti Suzuki dealers will contact owners of the car covered under this replacement. The nationwide dealer service network has been updated about this part replacement. The new part has been despatched to the dealer workshops. This is to ensure smooth execution of the change activity and to avoid inconvenience to the customers.

Source: Issued in Customer Interest

Books You Are Reading Right Now

Posted: 06 Apr 2011 05:12 AM PDT

Dedicating this thread to sharing the names of books you are reading right now.

Share the names and your opinions about it.

CE badges on facebook

Posted: 06 Apr 2011 04:52 AM PDT

Hey, CEans, this thought just struck my mind..how about we all put our CE badge on our facebook profile picture? Please post your replies..I think that would be cool. :cean:

Application Of Friction Part 2

Posted: 06 Apr 2011 03:54 AM PDT

Lecture on Engineering Mechanics by Dr.G.Saravana Kumar, Department of Mechanical Engineering, IIT Guwahati.
Feel free to ask questions, doubts and contribute your ideas in this discussion thread---

Application Of Friction Part 1

Posted: 06 Apr 2011 03:50 AM PDT

Lecture on Engineering Mechanics by Dr.G.Saravana Kumar, Department of Mechanical Engineering, IIT Guwahati.
Feel free to ask questions, doubts and contribute your ideas in this discussion thread----

Friction - Video Lecture

Posted: 06 Apr 2011 03:46 AM PDT

Lecture on Engineering Mechanics by Dr.G.Saravana Kumar, Department of Mechanical Engineering, IIT Guwahati.
Feel free to ask questions, doubts and contribute your ideas in this discussion thread---

Cables - Video Lecture

Posted: 06 Apr 2011 03:40 AM PDT

Lecture on Engineering Mechanics by Dr.G.Saravana Kumar, Department of Mechanical Engineering, IIT Guwahati.
Feel free to ask questions, doubts and contribute your ideas in this discussion thread -

Internal Forces In Beams

Posted: 06 Apr 2011 03:35 AM PDT

Lecture on Engineering Mechanics by Dr.G.Saravana Kumar, Department of Mechanical Engineering, IIT Guwahati.
Feel free to ask questions, doubts and contribute your ideas in this discussion thread -

Darn This Exam Season!

Posted: 06 Apr 2011 02:59 AM PDT

It's been quite a long time since we organized a big contest for CEans. The exam season is on and CrazyEngineers is experiencing lower traffic than usual. It'll take few more weeks before we get all our regular CEans back in action.

Till then, can we think of new contest ideas? The 'Video Making' contest will be launched in July when the colleges re-open. There's another contest we may plan in May - the Resume Writing Contest (the idea credit goes to Optimystix).

Any other ideas?

Micromax Bling 2 Coming Soon

Posted: 06 Apr 2011 02:31 AM PDT

Micromax Bling 2 will build on the success of Bling (Q55) and offer extra features over the original Bling. The launch date & price has not been officially announced yet. The phone will have a pink body and Swarovski elements in its design just like the earlier Bling.

Linux Simple Command Reference Guide

Posted: 06 Apr 2011 02:27 AM PDT

Struggling to get started in Linux? Here's a simple command reference guide created by Amit Agrawal of Digital Inspiration to help you get started with Linux. Download the PDF and use it for your reference. If you need help with commands for specific function, feel free to ask it in this discussion.

Download Attachment (Only For Registered Members): Attachment 127

Attached Files