On the response of two commercially-important CFRP structures to multiple ice impacts

Appleby-Thomas, Gareth; Hazell, Paul J.; Dahini, Gussan

doi:10.1016/j.compstruct.2011.04.029

Cited by 78 publications

(31 citation statements)

References 21 publications

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“…5a). Although these events have a low probability (less than 1 m −2 yr −1 ), they may thus be sufficient to cause damage to blade coatings in isolation from the effects of the cumulative fatigue (Appleby- Thomas et al, 2011;Kim and Kedward, 2000). Conversely, individual rain impacts rarely exceed 5.2 J at any site.…”

Section: Station Codementioning

confidence: 99%

“…The stress induced by individual high net collision impacts with hydrometeors may, in principle, exceed the strength of the material. Estimates of the failure energy threshold of a composite structure vary widely (e.g., values of 72-140 J are given in Appleby- Thomas et al, 2011) and may exceed 300 J for leading-edge thicknesses and hailstone diameters > 20 mm (Kim and Kedward, 2000). However, conceptually the erosion of homogeneous materials is most frequently considered using a three-stage model.…”

Section: Introduction and Objectivesmentioning

confidence: 99%

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Radar-derived precipitation climatology for wind turbine blade leading edge erosion

2020

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Wind turbine blade leading edge erosion (LEE) is a potentially significant source of revenue loss for wind farm operators. Thus, it is important to advance understanding of the underlying causes, to generate geospatial estimates of erosion potential to provide guidance in pre-deployment planning, and ultimately to advance methods to mitigate this effect and extend blade lifetimes. This study focuses on the second issue and presents a novel approach to characterizing the erosion potential across the contiguous USA based solely on publicly available data products from the National Weather Service dual-polarization radar. The approach is described in detail and illustrated using six locations distributed across parts of the USA that have substantial wind turbine deployments. Results from these locations demonstrate the high spatial variability in precipitationinduced erosion potential, illustrate the importance of low-probability high-impact events to cumulative annual total kinetic energy transfer and emphasize the importance of hail as a damage vector.

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Section: Station Codementioning

confidence: 99%

Section: Introduction and Objectivesmentioning

confidence: 99%

Radar-derived precipitation climatology for wind turbine blade leading edge erosion

2020

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“…More recently Carney et al [20] performed high velocity impacts of ice cylinders on load cell in order to generate experimental data to validate an ice material model; the contact force was not quantified although it is distinguished from the load cell measurement. ApplebyThomas et al [22] studied the effect of multiple impacts on carbon/epoxy composite panels; Combescure et al [23] analysed the high velocity impact of cylindrical ice on both rigid and flexible targets. Hong et al [24] focused its investigation in the impact of very small particles of ice on carbon/epoxy composite laminates.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Ice Impact Process at High Velocity

et al. 2015

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P e r n a s -S á n c h e z , J . ; A r t e r o -G u e r r e r o , J . A . ; V a r a s , D . ; L ó p e z -P u e n t e , J . ( 2 0 1 5 ) . "A n a l y s i s o f I c e Im p a c t P r o c e s s a t H i g h V e l o c i t y " . E x p e r im e n t a l M e c h a n i c s , v . 5 5 , I s s u e 9 , J u l y , p p . 1 6 6 9 -1 6 7 9 . DO I : 1 0 . 1 0 0 7 / s 1 1 3 4 0 -0 1 5 -0 0 6 7 -4 © S o c i e t y f o r E x p e r im e n t a l M e c h a n i c s 2 0 1 5 P r o y e c t o D P I 2 0 1 3 -4 1 0 9 4 -R A n a l y s i s o f I c e Im p a c t P r o c e s s a t H ig h V e l o c i t y J . P e r n a s -S á n c h e z 1 · J .A . A r t e r o -G u e r r e r o 1 · D . V a r a s 1 · J . L ó p e z -P u e n t e 1 A b s t r a c t: I n t h i s w o r k t h e h i g h v e l o c i t y im p a c t o f i c e s p h e r e s i s a n a l y s e d . A n e x p e r im e n t a l m e t h o d o l o g y h a s b e e n d e v e l o p e d i n o r d e r t o l a u n c h , a t h i g h v e l o c i t y , i c e s p h e r e s o f d i f f e r e n t d i am e t e r s a g a i n s t a l o a d c e l l t o m e a s u r e t h e f o r c e i n d u c e d d u r i n g t h e im p a c t . A n a n a l y s i s o f t h e i n f l u -e n c e o f t h e i c e m a s s o n t h e im p a c t f o r c e i s a c c om p l i s h e d u s i n g t h e c o n t a c t f o r c e w h i c h w a s c a l c u l a t e d b y m e a n s o f a n i n v e r s e p r o b l em t e c h n i q u e . F i n a l l y a s t u d y o f t h e im p a c t p h e n om e n o n h a s b e e n p e r f o rm e d u s i n g t h e v i d e o s o b t a i n e d w i t h a h i g h s p e e dc am e r a . K ey wo r d s : I c e b e h a v i o u r ; H i g h v e l o c i t y im p a c t ; H ig h s t r a i n r a t e ; E x p e r im e n t a l ; C o n t a c t f o r c e I n t r o d u c t i o n D u r i n g i t s s e r v i c e l i f e , a i r c r a f t s t r u c t u r e s c o u l d b e s u b j e c t e d t o d i f f e r e n t k i n d o f l o a d s . F o c u s i n g o n im p a c t l o a d s , i t i s T h i s r e s e a r c h w a s d o n e w i t h t h e f i n a n c i a l s u p p o r t o f t h e S p a n i s h M i n i s t r y o f E d u c a t i o n u n d e r P r o j e c t r e f e r e n c e D P I 2 0 1 3 -4 1 0 9 4 -R .J . Ĺ o p e z -P u e n t e j l p u e n t e@ i n g . u c 3m . e s J . P e r n a s -Ś a n c h e z j p e r n a s@ i n g . u c 3m . e s J .A . A r t e r o -G u e r r e r o j a r t e r o@ i n g . u c 3m . e s D . V a r a s d v a r a s@ i n g . u c 3m . e s

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“…The SHEAR -a material is failed as shift, the SPALL -a material is failed as a separation, MELTING -internal energy more than energy of fusion, P GAS -internal energy of a material more than energy of sublimation, GAS -the substance is evaporated. Elimination of the evaporated fragments allows simplifying the analysis of a problem [11][12][13][14][15][16][17][18][19][20][21][22]. The areas of light grey color indicate material fusion and the dark areas correspond to a material condition, while its internal energy more than sublimation energy.…”

Section: Problem Statement the Initial Data And Analysis Resultsmentioning

confidence: 99%

Protective Effectiveness of Porous Shields Under the Influence of High-Speed Impact Loading

Kramshonkov

Krainov

Shorohov

2016

EPJ Web of Conferences

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Abstract. The results of numerical simulations of a compact steel impactor with the aluminum porous shields under high-speed shock loading are presented. The porosity of barrier varies in wide range provided that its mass stays the same, but the impactor has always equal (identical) mass. Here presented the final assessment of the barrier perforation speed depending on its porosity and initial shock speed. The range of initial impact speed varies from 1 to 10 km/s. Physical phenomena such as: destruction, melting, vaporization of a interacting objects are taken into account. The analysis of a shield porosity estimation disclosed that the protection effectiveness of porous shield reveals at the initial impact speed grater then 1.5 km/s, and it increases when initial impact speed growth.

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On the response of two commercially-important CFRP structures to multiple ice impacts

Cited by 78 publications

References 21 publications

Radar-derived precipitation climatology for wind turbine blade leading edge erosion

Radar-derived precipitation climatology for wind turbine blade leading edge erosion

Analysis of Ice Impact Process at High Velocity

Protective Effectiveness of Porous Shields Under the Influence of High-Speed Impact Loading

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