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A contour gauge set to the profile of a small pot A contour gauge. A profile gauge or contour gauge is a tool for recording the cross-sectional shape of a surface. Contour gauges consist of a set of steel or plastic pins that are set tightly against one another in a frame which keeps them in the same plane and parallel while allowing them to move independently, perpendicularly to the frame.
In contrast with 2D naming conventions, the name of a 3D parameter does not reflect the filtering context. For example, Sa always appears regardless of the surface, whereas in 2D there is Pa, Ra or Wa depending on whether the profile is a primary, roughness or waviness profile.
MountainsMap Profile 2D Profilometers: ISO 25178 surface texture parameters Roughness, Waviness, Contour analysis MountainsMap Topography [29] 3D Profilometers based on single point sensors [8] (stylus contact, chromatic non-contact) ISO 25178 Surface topography parameters 3D surface topography rendering Sensor range expansion by vertical patching
A blast pattern is created; A number of holes are drilled into the rock, which are then partially filled with explosives. Stemming, inert material, is packed into the holes to direct the explosive force into the surrounding rock. [6] Detonating the explosive causes the rock to collapse. Rubble is removed and the new tunnel surface is reinforced.
Blasting mats are used when explosives are detonated in places such as quarries or construction sites. The mats are placed over the blasting area to contain the blast, suppress noise [1] and dust as well as prevent high velocity rock fragments called fly rock (or flyrock) from damaging structures, [2] people or the environment in proximity to the blast site. [3]
Original 1940s Taylor-Hobson Talysurf surface profile measuring machine. Optical methods [1] [2] include interferometry based methods such as digital holographic microscopy, vertical scanning interferometry/white light interferometry, phase shifting interferometry, and differential interference contrast microscopy (Nomarski microscopy); focus detection methods such as intensity detection ...
Surface metrology is the measurement of small-scale features on surfaces, and is a branch of metrology. Surface primary form, surface fractality, and surface finish (including surface roughness) are the parameters most commonly associated with the field. It is important to many disciplines and is mostly known for the machining of precision ...
A laser beam profiler captures, displays, and records the spatial intensity profile of a laser beam at a particular plane transverse to the beam propagation path. Since there are many types of lasers— ultraviolet , visible , infrared , continuous wave , pulsed, high-power, low-power—there is an assortment of instrumentation for measuring ...
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