Autor: Bienias, P. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Optical Study of ZnTe-Based 2D and 0D Photonic Structures Containing CdTe/ZnTe Quantum Dots
Autorzy:: Jakubczyk, T.
Kazimierczuk, T.
Golnik, A.
Bienias, P.
Pacuski, W.
Kruse, C.
Hommel, D.
Kłopotowski, Ł.
Wojtowicz, T.
Gaj, J.
Powiązania:: https://bibliotekanauki.pl/articles/1791336.pdf
Data publikacji:: 2009-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.67.Pt
Opis:: We report on an optical study of ZnTe-based microcavity and micropillars. Angle-resolved reflectivity studies confirm a high quality of the investigated structure by setting the lower bound on the quality factor Q ≥ 1000, determined from normal-incidence reflection spectra. In a microphotoluminescence study, micropillar modes are observed at temperatures of the order of tens of kelvins. For structures grown by a complex growth procedure at two different MBE facilities, an enhancement of photoluminescence in the cavity mode is observed.
Źródło:: Acta Physica Polonica A; 2009, 116, 5; 888-889
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Evaluation of Force-Time Changes During Impact of Hybrid Laminates Made of Titanium and Fibrous Composite
Autorzy:: Jakubczak, P.
Surowska, B.
Bieniaś, J.
Powiązania:: https://bibliotekanauki.pl/articles/352329.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: hybrid composites
titanium-carbon laminates
impact
damage
Opis:: Fibre metal laminates (FML) are the modern hybrid materials with potential wide range of applications in aerospace technology due to their excellent mechanical properties (particularly fatigue strength, resistance to impacts) and also excellent corrosion resistance. The study describes the resistance to low velocity impacts in Ti/CFRP laminates. Tested laminates were produced in autoclave process. The laminates were characterized in terms of their response to impacts in specified energy range (5J, 10J, 20J). The tests were performed in accordance with ASTM D7137 standard. The laminates were subjected to impacts by means of hemispherical impactor with diameter of 12,7 mm. The following values have been determined: impact force vs. time, maximum force and the force at which the material destruction process commences (Pi). It has been found that fibre titanium laminates are characterized by high resistance to impacts. This feature is associated with elasto-plastic properties of metal and high rigidity of epoxy - fibre composite. It has been observed that Ti/CFRP laminates are characterized by more instable force during impact in stage of stabilization of impactor-laminate system and stage of force growth that glass fibre laminates. It has been observed more stable force decrease in stage of stress relaxation and withdrawal of the impactor. In energy range under test, the laminates based on titanium with glass and carbon fibres reinforcement demonstrate similar and high resistance to low-velocity impact, measured by means of failure initiation force and impact maximum force.
Źródło:: Archives of Metallurgy and Materials; 2016, 61, 2A; 689-694
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Identyfikacja defektów w cylindrycznych laminatach szklanych przy wykorzystaniu aktywnej termografii
Defect identification in GFRP cylindrical panels by active thermography
Autorzy:: Pastuszak, P. D.
Chwał, M.
Muc, A.
Bieniaś, J.
Powiązania:: https://bibliotekanauki.pl/articles/278239.pdf
Data publikacji:: 2014
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Inżynierii Materiałów Polimerowych i Barwników
Tematy:: laminat szklany
laminat cylindryczny
folia teflonowa
defekt
termografia aktywna
glass laminate
cylindrical laminate
teflon foil
defect
active thermography
Opis:: W prezentowanej pracy przedstawiono identyfikację podpowierzchniowych defektów w cylindrycznych laminatach szklanych z wykorzystaniem termografii w podczerwieni. Analizie poddano jednokierunkowe laminaty o dwóch konfiguracjach: 0° (S0) oraz 90° (S90), w których pomiędzy warstwy laminatu wprowadzono sztuczny podpowierzchniowy defekt w formie teflonowej folii. Analizę termograficzną prowadzono bazując na technice impulsowej, a rezultaty zaprezentowano w formie termogramów i profili temperaturowych. Wyniki analizy potwierdziły przydatność impulsowej aktywnej termografii w badaniu cylindrycznych struktur kompozytowych. Dodatkowo podkreślono problem jednorodnego nagrzewania powierzchni zakrzywionych.
The presented paper is dedicated to infrared thermographic identification of subsurface defects in cylindrical panels made of glass lamina. The analyzed samples were made as unidirectional lamina in the case of two base configurations: 0° (S0) and 90° (S90) in which the artificial subsurface defect was in the form of Teflon foil introduced between the layers in the structure. The thermography study based on the pulse technique was conducted and the results were presented in the form of thermograms and temperature profiles. The effects of the analysis confirmed the usefulness of the pulsed active thermography method related to cylindrical composite structures. Additionally, the problem with the uniform heating of the curved surfaces was depicted.
Źródło:: Przetwórstwo Tworzyw; 2014, [R.] 20, nr 1 (157), 1 (157); 68-75
1429-0472
Pojawia się w:: Przetwórstwo Tworzyw
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Damage Detection and Size Quantification of FML with the Use of NDE
Autorzy:: Dragan, K.
Kornas, Ł.
Kosmatka, M.
Leski, A.
Sałaciński, M.
Synaszko, P.
Bieniaś, J.
Powiązania:: https://bibliotekanauki.pl/articles/98012.pdf
Data publikacji:: 2012
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:: fibre metal laminates
composites
non-destructive testing
Opis:: Composite materials have been developed in recent years. A new generation of structural composite materials for advanced aircraft is Fibre Metal Laminates (FML). They are hybrid composites consisting of alternating thin layers of metal sheets and fiber-reinforced composite material. FMLs have both low weight and good mechanical properties (high damage tolerance: fatigue and impact characteristics, corrosion and fire resistance). Quality control of materials and structures in aircraft is an important issue, also for Fibre Metal Laminates. For FML parts, a 100% non-destructive inspection for internal quality during the manufacturing process is required. In the case of FML composites, the most relevant defects that should be detected by non-destructive testing are porosity and delaminations. In this paper, a number of different non-destructive methods for the inspection of Fibre Metal Laminates were studied. The possibility of quality control of manufactured FML laminates - detection of defects as well as the procedures and processes are presented and discussed.
Źródło:: Fatigue of Aircraft Structures; 2012, 4; 5-9
2081-7738
2300-7591
Pojawia się w:: Fatigue of Aircraft Structures
Dostawca treści:: Biblioteka Nauki

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