However, boards can vary widely in form factor. This process consists of essentially the same steps for all circuit board structures. The assembly stage is where your component selections are attached to the board and most inspections are performed. During fabrication, the physical architecture of the board is realized, which includes the stackup of layers, drilling of holes, etching of copper traces, and application of solder masking.
The construction of a PCB is a well-defined process divided into two stages: fabrication and assembly. Let’s define PCB structure types and then discuss how a circuit board can be tested for structural integrity. Once the desired quality level is reached, it is recommended to evaluate the board’s ability to maintain its form factor for its intended application and over the operational lifecycle. Performance testing, in fact, is one of the three major stages of the PCB prototype iteration cycle that define the quality of your board’s development. Testing is also a very useful and important tool for evaluating whether a PCB will be able to meet its performance and reliability objectives. Nevertheless, testing, if done objectively, can provide very useful information about a student’s understanding of the course material, a patient’s health, or a candidate’s match for a position. Regardless of whether it is an academic exam, medical evaluation, or a job interview, having to undergo an assessment can cause even normally steady individuals to become nervous and apprehensive. When the Varro generational ship broke apart due to silicon-based parasites in 2375, Voyager extended its structural integrity field around the ship to buy enough time for the Varro to evacuate the affected areas.One of the greatest causes of anxiety is being tested. The warp coils of an Intrepid-class starship would rupture within a short time if the structural integrity field around them collapsed. As a result, many of the outer hull plates were torn from the ship. In an alternate 2374, the USS Voyager was forced to engage warp drive while the structural integrity field was still down, in order to escape the Krenim weapon ship. In order to stop the USS Defiant from being torn to pieces by exceeding warp nine in 2374, Chief Miles O'Brien took power from the phaser reserves to strengthen the starship's structural integrity field. ( DS9: " Looking for par'Mach in All the Wrong Places") Several people used the opportunity to steal equipment from the exposed cargo bays. Later that year, the SIF of Deep Space 9's Upper Pylon Three failed and tore open some of the bulkheads. ( DS9: " The Passenger")Īfter the USS Defiant was disabled by two Jem'Hadar attack ships in 2372, Worf ordered Stevens to recalibrate the SIF to minimize the strain caused by a torpedo embedded in the hull fired from the Dominion ships. Major Kira Nerys was able to get it back online temporarily. The aft structural integrity field of the Kobliad transport Reyab failed in 2369.
#Structural integrity free
When the USS Enterprise-D was trying to break free from the influence of the two-dimensional beings, the structural integrity field stress was exceeding 82 million kilodynes and the attempt had to be aborted. In 2366, Lieutenant Geordi La Forge reconfigured structural integrity power to feed the inner deflector grid by taking some power from the structural integrity field, despite this reroute compromising operational safety limits. As the hull became damaged or breached, the SIF became less effective as the hull it was designed to hold together started to disintegrate.
As the percentage approached zero, this meant that more and more of the stress of weapons, gravity, and other phenomena was being experienced by the hull itself rather than the force field.
A structural integrity reading of 100% meant that the field was accepting a maximum load of the stresses presented to the structure, and that all physical architecture was safe from that stress.
The field strength was usually measured in percentages. This technology was made necessary by the fantastic stresses and probability of a hull breach presented by warp fields and spatial phenomena present in the galaxy. Engineers used a structural integrity force field to supplement the supports and bulkheads that gave a piece of architecture its shape. The structural integrity field (acronymed SIF) was a technology developed by spacefaring species to supplement the natural structural integrity of the material their starship hulls or other constructions were composed of. (covers information from several alternate timelines)
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