Developers and users of industrial remote laser beam welding applications are often faced with different challenges under the conditions of series production. First, those applications are preferably conducted without any localized gas shielding, and therefore, specific interactions between the laser radiation and the welding fumes are very likely to occur, causing an impairment of the process stability, the reliability and the weld seam quality. Second, welding fume residuals are capable of contaminating workpieces, optical components and other parts of the processing chamber, and they are also able to cause a serious pollution of the cabin atmosphere, because a significant part of the welding fume species is harmful or even toxic and carcinogenic. Each of these points gives a good reason to develop appropriate cabin air flow concepts, but in practice, it is still a challenge to design and optimize the air or gas flow because (i) the conditions of an ideal gas flow regime are uncertain, (ii) different gas flows are able to interact in complex manners, and (iii) it is costly to describe and monitor the gas flow characteristics inside the processing chamber experimentally.
ORLANDO, FL, March 21, 2018 — Published through the Laser Institute of America (LIA), renowned author Dr. Kay Ball has revised her book, Lasers – The Perioperative Challenge, to provide updated laser technology information to healthcare professionals. This is the fourth edition; the first was published in 1990, and Dr. Ball notes that much has evolved […]
Design Guidelines for Laser Metal Deposition of Lightweight Structures By Ake Ewald and Josef Schlattmann Introduction Weight critical applications, like parts in the aerospace industry, are driven by lightweight design. Titanium alloys have great potential in lightweight design of structural parts due to their excellent specific mechanical properties. Today, structural parts are manufactured in conventional […]
One of the biggest challenges for those who maintain a home aquarium is keeping the tank free of pests and contaminants, that pose significant threats to the living creatures inside. While there is no shortage of methods to keep your tank balanced and under control, a recent thread on aquarium enthusiast site Reef2Reef revealed a […]
Anxiety disorders affect more than 40 million adults in the United States, alone. Over 6.7 percent of U.S. adults suffer from Major Depressive Disorder. These and other similar disorders are typically treated using a combination of behavioral therapy and pharmaceutical drugs. While generally effective in the realm of treatment, the standard methods do not work for […]