Surface roughness measurement based on fiber optic sensor

Zhu, Ning; Zhang, Jun

doi:10.1016/j.measurement.2016.02.051

Cited by 18 publications

(4 citation statements)

References 5 publications

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“…3 shows the evolution of I (ρ, z) with z. For sufficiently large distances, z ≫ z 0 =⇒ w (z) ≈ w 0 z z 0 w (z) ≈ ztan θ 0 = ztan(arcsin NA) (5) being NA the numerical aperture of the transmitting fiber. The divergence angle θ 0 and w 0 are parameters that solely rely on the light source and transmitting fiber characteristics.…”

Section: Fiber Bundlementioning

confidence: 99%

“…In Figs. 7(i) and (j) we vary the NA between [0.1, 3], which corresponds to the acceptance angles θ 0 = [5,15] • . If we increase the NA, the responsivity increases in slope and shifts towards smaller z values, see Fig.…”

Section: Variation Of the Position Of The Outer Radius ρmentioning

confidence: 99%

“…H IGH precision metrology is essential in Industry 4.0 to monitor and improve the efficiency and versatility of factory processes [1], [2]. As a result, distance sensors are used in a wide range of applications to measure several parameters of interest such as the thickness, height, roughness, deformation, distortion, and gap between surfaces, for instance, [3]- [5]. To select the best-fitting device, we have to consider the application, the environment, and the required precision, as these factors are critical to determine the specifications of the sensor.…”

Section: Introductionmentioning

confidence: 99%

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A New Method to Design Trifurcated Optical Fiber Displacement Sensors

Zubia,

Amorebieta

et al. 2024

IEEE Sensors J.

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Trifurcated optical fiber displacement sensors (OFDS) are increasingly used in industrial and aerospace applications. The critical element of the sensor is the fiber bundle. However, there is no straightforward method to calculate it from the working specifications of the sensor, the number of fibers needed, their size, and arrangement. This work presents a simple yet accurate method to design trifurcated OFDSs. The proposed method allows to derive the geometrical arrangement and size of the fibers from three simple equations, thus reducing significantly the difficulty and complexity of the OFDS design. Those three equations depend on the working point, working range, required sensitivity, and maximum size of the bundle. In this way, the proposed method will save valuable time for researchers and engineers who wish to design, fabricate, and use this type of OFDSs. The procedure is explained in detail with two examples. The results predicted by the model are compared with the experimental results of a bundle with identical fiber arrangement and dimensions. The results show good agreement with a deviation of less than 1% in the working range of the sensor.

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Section: Fiber Bundlementioning

confidence: 99%

Section: Variation Of the Position Of The Outer Radius ρmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A New Method to Design Trifurcated Optical Fiber Displacement Sensors

Zubia,

Amorebieta

et al. 2024

IEEE Sensors J.

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“…Shahabia and Ratnam used twodimensional images of the nose area of tool tips to simulate the surface profiles of the specimen after turning was completed [19]. Zu and Zhan developed a multi-wavelength fiber sensor method that can measure surface roughness and surface scattering characteristics [20].…”

Section: Introductionmentioning

confidence: 99%

Geometrical consideration for mechanical contact between rolling circle and surface roughness as an improvement to the surface profile

Shimizu¹,

Hramiishi²,

Ishii³

et al. 2021

JMES

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This paper describes measurement methods of surface profiles that improve contact-type displacement sensor outputs by focusing on the contact point between the sphere tip of the sensor and the rough surface. We examined the geometry of a surface profile model and compared measurements using various methods with the measurement using a roughness meter. The spherical tip of the contact type displacement sensor touches the measurement surface and detects the displacement. The sphere tip radius of a typical contact-type displacement sensor ranges from 1–3 mm, causing the roughness curve to be “filtered” by the radius of the sphere. Three methods for estimating the valley portion of the surface profile are evaluated in this study: a) linear approximation of the concave portion of the surface profile, b) function approximation of the concave portion, and c) using the known nose radius of the machining tool. The following sphere tip radii were used to measure actual surface profiles: 0.25 mm, 0.5 mm, 1.0 mm and 1.5 mm. Given the conditions of the experimental model, we found that surface profiles with a roughness that approximates a predictable curve can be measured with a high degree of accuracy.

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Study on a novel portable urine analyzer based on optical fiber bundles

Liu

2018

Measurement

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Surface roughness measurement based on fiber optic sensor

Cited by 18 publications

References 5 publications

A New Method to Design Trifurcated Optical Fiber Displacement Sensors

A New Method to Design Trifurcated Optical Fiber Displacement Sensors

Geometrical consideration for mechanical contact between rolling circle and surface roughness as an improvement to the surface profile

Study on a novel portable urine analyzer based on optical fiber bundles

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