摘要:
A microfluidic device comprises a first substrate (102) made of a first polymer material and a second substrate (104) made of a second polymer material, the first (102) and second (104) substrates having respective bonding surfaces (23, 41), at least one of the bonding surfaces (41) having channel formations (14) so that, when the bonding surfaces (23, 41) are bonded by surface deformation to one another, the bonded first and second substrates (102, 104) and the channel formations (14) form at least part of a microfluidic channel network comprising a plurality of microfluidic channels, wherein one or more indicator pits (11), separate to the channel formations (14) defining the microfluidic channel network, are formed in at least one of the bonding surfaces (23, 41), so that surface deformation caused by the bonding process causes a change of configuration of the one or more indicator pits (11).
摘要:
A composite wall assembly edge joint, includes a first composite buildup pad secured to a first composite face sheet with the first composite buildup pad having a first tapered section with a first inclined surface which extends in a first direction and having a second section which extends from the first tapered section with a second surface which extends in a second direction, different from the first direction, toward a first end of the first composite face sheet. The assembly further includes a composite flute core member, having a tapered first portion secured to the first tapered section; a second portion secured to the first composite face sheet; and a third portion which extends in the second direction, away from the tapered first portion, toward the first end of the first composite face sheet secured to the second section.
摘要:
Fluid flow conduits (14, 14a, 14b, 82, 110, 128, 138) are disclosed. Each conduit (14, 14a, 14b, 82, 110, 128, 138) has a polymeric open end that is sealed by a sealing member (26, 26a, 26b, 84, 102, 130, 140) that includes a heating element (28, 68). The polymeric end material is melted, the sealing members (26, 26a, 26b, 84, 102, 130, 140) are moved to expose the melted open ends of the conduits (14, 14a, 14b, 82, 110, 128, 138) and the ends are brought together to form a fused or welded connection between the conduits (14, 14a, 14b, 82, 110, 128, 138) .
摘要:
The invention relates to a device (1) for an engine which includes an oil pan (2) made of a plastic material having a hollow shape (21) containing lubricating oil defined by a bottom wall (22), a plurality of side walls (24) and upper edges (25). The oil pan (2) has at least one exchanger surface (30) which comprises means for circulating oil and means for circulating a coolant, and a heat exchanger (4) in which oil and a coolant circulate, comprising a series of plates (41) made of a plastic material welded together two-by-two and welded to the exchanger surface (30).
摘要:
The present invention relates to a torsion-box type airfoil structure. The structure (3) being formed by joined structural composite parts (5, 7, 9, 11) made of fiber reinforced plies (19) stacked onto each other. At least a first (11) and a second structural part (5) being joined by embedding a plurality of elongated reinforcement fiber-like elements (17, 17', 23, 23', 23'', 23''') in said first (11) and second (5) structural parts, wherein said fiber-like elements (17, 17', 23, 23', 23'', 23''') connect said parts to each other.
摘要:
A welded joint between at least one element of metal material (1) and at least one element of thermoplastic material (2) is obtained by pressing the two elements against each other while applying heat, for instance by a laser beam (L). The contact surfaces (1A) of the element of metal material (1) which are in contact with the element of thermoplastic material (2) are provided with uneven surface portions (3) having a distribution of asperities. Due to the heat applied, the composite thermoplastic material fields the spaces between these asperities and maintains this configuration after a subsequent cooling, so as to improve the strength of the welded joint. The uneven surface portions (3) are obtained in a preliminary forming step of the element of metal material (1) in a rolling mill (M) and/or in a press mould (4, 5). To this end, the rolling mill (M) and/or the press mould 4,5 are configured with a forming surface (30) adapted to generate the above mentioned uneven surface portions (3) by mechanical deformation of the metal material, when the element of metal material (1) is deformed within the rolling mill (M) and/or the press mould (4, 5). By this technique it is possible to obtain hybrid components made of one or more elements of metal material between which a shaped component of thermoplastic material is interposed or hybrid components made by sheet elements of different metals, such as aluminiun and steel, with portions of thermoplastic material interposed at the joints. Preferably, the thermoplastic material is a composite material with a thermoplastic matrix reinforced with fibres.