Featured Research

from universities, journals, and other organizations

Protecting laptops on the move: Theoretical model for vibrations in laptops provides design strategies for reducing hard drive failures

Date:
June 19, 2014
Source:
The Agency for Science, Technology and Research (A*STAR)
Summary:
Laptops have the advantages of being more versatile and portable than their desktop counterparts. But these attributes impose considerable demands on the electronic components in a laptop -- particularly the hard drive. The magnetic disk inside a hard drive rotates at a rate of several thousand revolutions a minute. At the same time, a read/write head moves only a few nanometers above the disk surface to access information on the disk. At such high speeds, large vibrations can permanently damage the hard drive.

Laptops have the advantages of being more versatile and portable than their desktop counterparts. But these attributes impose considerable demands on the electronic components in a laptop -- particularly the hard drive. The magnetic disk inside a hard drive rotates at a rate of several thousand revolutions a minute. At the same time, a read/write head moves only a few nanometers above the disk surface to access information on the disk. At such high speeds, large vibrations can permanently damage the hard drive.

Related Articles


To help reduce hard drive failures, Jianqiang Mou and colleagues from the A*STAR Data Storage Institute in Singapore have now developed a computer model that can predict and minimize the effects of vibrations on the hard drive and ultimately help to improve laptop design1.

Current designs of many laptops actually compound the problems caused by vibrations. For instance, to provide protection from external impact and accidents, laptops are often encased in special housings intended to absorb accidental drops and other shocks. Such laptop designs can actually be counterproductive if not done properly, explains Mou. "The commercial notebook computer industry rarely understands how chassis design can substantially affect the performance of the hard drive. Some notebook computers are designed with vibration sources, for example the loud speaker, located close to the hard drive."

To get back to the fundamentals of laptop design, the researchers developed a theoretical framework that models the propagation of vibrations from various components in a laptop, such as the speakers, to the hard drive. Underpinning this framework are mathematical equations that describe the transmission of vibrations in laptops, and these equations form the input for a computer model applied to specific laptop designs.

The results of the researchers' calculations can be used to inform general laptop design strategies. For example, often very stiff materials are used for laptop cases to provide enhanced mechanical strength. However, stiff materials tend to transmit high-frequency vibrations more strongly than flexible materials, and it is difficult for hard drives to compensate for these frequencies. Softer materials are preferable as they suppress higher frequency vibrations, leaving only slower vibrations which are easier for hard drives to compensate.

"Our study provides an effective approach for computer and hard drive makers to optimize the chassis design and component mounting," adds Mou. "Furthermore, the methodology presented in our paper can be applied for analysis and optimal design of other computer chassis, such as servers in data centers."


Story Source:

The above story is based on materials provided by The Agency for Science, Technology and Research (A*STAR). Note: Materials may be edited for content and length.


Journal Reference:

  1. Lai, F., Mou, J. Q., See, I. B. L. & Lin, W. Z. Modeling and analysis of notebook computer chassis structure for optimization of component mounting. International Journal of Mechanical Sciences, 76, 60%u201369 (2013)

Cite This Page:

The Agency for Science, Technology and Research (A*STAR). "Protecting laptops on the move: Theoretical model for vibrations in laptops provides design strategies for reducing hard drive failures." ScienceDaily. ScienceDaily, 19 June 2014. <www.sciencedaily.com/releases/2014/06/140619145933.htm>.
The Agency for Science, Technology and Research (A*STAR). (2014, June 19). Protecting laptops on the move: Theoretical model for vibrations in laptops provides design strategies for reducing hard drive failures. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2014/06/140619145933.htm
The Agency for Science, Technology and Research (A*STAR). "Protecting laptops on the move: Theoretical model for vibrations in laptops provides design strategies for reducing hard drive failures." ScienceDaily. www.sciencedaily.com/releases/2014/06/140619145933.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Computers & Math News

Wednesday, November 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

FCC Forces T-Mobile To Alert Customers Of Data Throttling

FCC Forces T-Mobile To Alert Customers Of Data Throttling

Newsy (Nov. 25, 2014) T-Mobile and the FCC have reached an agreement requiring the company to alert customers when it throttles their data speeds. Video provided by Newsy
Powered by NewsLook.com
Symantec Uncovers Sophisticated Spying Malware Regin

Symantec Uncovers Sophisticated Spying Malware Regin

Newsy (Nov. 24, 2014) A Symantec white paper reveals details about Regin, a spying malware of unusual complexity which is believed to be state-sponsored. Video provided by Newsy
Powered by NewsLook.com
How to Keep Your Android Device Safe This Holiday Season

How to Keep Your Android Device Safe This Holiday Season

Howdini (Nov. 24, 2014) Protect yourself against malware and hackers, especially during the hectic online shopping season. Mobile device security makes a great holiday gift and protects your loved ones from cyber attacks and identity theft. Video provided by Howdini
Powered by NewsLook.com
How to Keep You and Your Family's Identitiy Safe Online This Holiday Season

How to Keep You and Your Family's Identitiy Safe Online This Holiday Season

Howdini (Nov. 24, 2014) The hectic holiday season is a prime time for online identity theft, so make sure you’re protected.Be cautious when shopping online Internet security software makes a great holiday gift and protects your loved ones from cyber attacks and identity theft. Video provided by Howdini
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins