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The free tool was officially closed by the owners, IBM, on February 1, 2008. [2] The software is now available as part of IBM's Rational Policy Tester Accessibility Edition. [1] [3] Currently, the Web Accessibility Evaluation Tool (WAVE) provides this free service at wave.webaim.org.
Acoustic or stress wave tomography is a non-destructive measurement method for the visualization of the structural integrity of a solid object. It is being used to test the preservation of wood or concrete , for example.
WebAIM (Web Accessibility in Mind) is a non-profit organization based at Utah State University in Logan, Utah.WebAIM has provided web accessibility solutions since 1999. . WebAIM's mission is to expand the potential of the web for people with disabilities by providing the knowledge, technical skills, tools, organizational leadership strategies, and vision that empower organizations to make ...
An ultrasonic pulse velocity test is an in-situ, nondestructive test to check the quality of concrete and natural rocks. In this test, the strength and quality of concrete or rock is assessed by measuring the velocity of an ultrasonic pulse passing through a concrete structure or natural rock formation. This test is conducted by passing a pulse ...
The company was started in 1999 and produces accessibility testing software in addition to offering accessibility consulting services and training. [citation needed] In June, 2015 Deque open-sourced the accessibility rules engine axe-core. [2] In May 2020, the WorldSpace brand name was retired and replaced by axe for each of Deque's products. [3]
Acoustic resonance technology (ART) is an acoustic inspection technology developed by Det Norske Veritas over the past 20 years. ART exploits the phenomenon of half-wave resonance, whereby a suitably excited resonant target (such as a pipeline wall) exhibits longitudinal resonances at certain frequencies characteristic of the target's thickness.
Guided wave testing (GWT) is a non-destructive evaluation method. The method employs acoustic waves that propagate along an elongated structure while guided by its boundaries. The method employs acoustic waves that propagate along an elongated structure while guided by its boundaries.
The Hopkinson pressure bar was first suggested by Bertram Hopkinson in 1914 [1] as a way to measure stress pulse propagation in a metal bar. Later, in 1949 Herbert Kolsky [2] refined Hopkinson's technique by using two Hopkinson bars in series, now known as the split-Hopkinson bar, to measure stress and strain, incorporating advancements in the cathode ray oscilloscope in conjunction with ...