Ultrasonic Nondestructive Testing of Materials

Langenberg, K. J.; Marklein, R.; Mayer, Klaus

doi:10.1201/b11724

Cited by 63 publications

(41 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…PZT-induced force densities give rise to pressure (P) and shear (S) waves as well as to Rayleigh-surface waves within elastic homogeneous and isotropic half spaces [24,25]. The coexistence of these waves in such a problem is numerically shown in Fig.…”

Section: Through-the-thickness Delamination Detectionmentioning

confidence: 98%

“…When a delamination is present, the characteristic parameter becomes the thickness of the layers located between the piezoelectric transducers and the delamination. This is because the delamination can be thought of as a physical discontinuity in the structure separating it into two different regions [25]. When such a discontinuity is located along the path of P and S waves, it prevents the waves from accessing the portion of the domain that lays beyond the damage, while these waves are reflected back with a resulting shortening of the propagation path.…”

Section: Through-the-thickness Delamination Detectionmentioning

confidence: 99%

See 1 more Smart Citation

Delamination detection in composite laminates using high-frequency P- and S-waves – Part I: Theory and analysis

Pasquali

Lacarbonara

2015

Composite Structures

View full text Add to dashboard Cite

Section: Through-the-thickness Delamination Detectionmentioning

confidence: 98%

Section: Through-the-thickness Delamination Detectionmentioning

confidence: 99%

Delamination detection in composite laminates using high-frequency P- and S-waves – Part I: Theory and analysis

Pasquali

Lacarbonara

2015

Composite Structures

View full text Add to dashboard Cite

“…V prípade chyby na protiľahlom povrchu materiálu, je možné na základe polohy a počtu ech na obrazovke defektoskopu približne určiť hĺbku chyby [4][5][6].…”

Section: Kontrola Creepovými Vlnami (30-70-70 Cds-technique)unclassified

Inspection possibilities of metallic material surface integrity by conventional ultrasonic technique

Konar

Mičian

Fabian

2017

Koroze a Ochrana Materialu

View full text Add to dashboard Cite

The article is focused on the possibilities of ultrasound surfaces control on metallic materials by conventional ultrasonic techniques. Physical principles, types of ultrasonic waves to be used for surface control are described in the theoretical part. Three surface control techniques are listed in the experimental part of article. The first technique is a common control by angle ultrasonic probe with using transverse waves. The second technique is surface control by 30-70-70 creep waves and third techniques is surface testing by Rayleigh waves. Practical examples of ultrasonic testing for all techniques are illustrated. The conclusion of the article is devoted to the advantages and limitations of the individual testing methods.

show abstract

“…Among these, acoustic tomography techniques based on the calculation of wave traveling time are frequently employed in practice [3][4][5][6][7][8][9][10][11][12]. For the numerical investigation of elastic waves Elastodynamic Finite Integration Technique (EFIT) can be used [13,14] which depends on the adaptation of Weiland's [15] Finite Integration Technique.…”

Section: Introductionmentioning

confidence: 99%

Inhomogeneity reconstructions in tendon ducts via boundary integral equations

Yaman¹,

Weiland²

2014

NDT & E International

View full text Add to dashboard Cite

a b s t r a c tIn this study, as an alternative to the formerly presented investigations, Newton-type numerical algorithms are proposed to find location and shape of an air void inside of a tendon duct and to identify gathered metallic bars in a concrete column. The simulated structures are illuminated by four acoustic sources at a fixed frequency such that the scattered field is measured in a near-field region at 128 points. According to the nature of physical problems, the Dirichlet boundary condition is employed to model air-filled cavities and transmission conditions are assumed for metallic objects. Additionally, conductive boundary conditions are suggested for a more realistic representation of the inhomogeneities for the rusty metallic skin of the duct. Potential approaches are used to derive boundary integral equations. The proper treatment of the ill-conditioned equations is established via Tikhonov regularization. Applicability of the proposed inversion algorithms is tested with realistic parameters for different scenarios using noisy scattered field data and accurate numerical results are presented at 10 kHz for the unknown physical properties of the duct's skin.

show abstract

Ultrasonic Nondestructive Testing of Materials

Cited by 63 publications

References 0 publications

Delamination detection in composite laminates using high-frequency P- and S-waves – Part I: Theory and analysis

Delamination detection in composite laminates using high-frequency P- and S-waves – Part I: Theory and analysis

Inspection possibilities of metallic material surface integrity by conventional ultrasonic technique

Inhomogeneity reconstructions in tendon ducts via boundary integral equations

Contact Info

Product

Resources

About